微调器：AppCompatSpinner 无法转换为 com.example.....MySpinner (Android)
Spinner: AppCompatSpinner cannot be cast to com.example.....MySpinner (Android)
我正在尝试从微调器中选择的相同项目触发事件。我发现 class 称为 MySpinner，它扩展了 Spinner，但显然我在实现时遇到了问题。
package com.example.ilija.festivalapp_makedox;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import com.example.ilija.festivalapp_makedox.MySpinner;
import com.example.ilija.festivalapp_makedox.agendacalendarview.CalendarPickerController;
import java.util.ArrayList;
public class CustomSpinner extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
public ArrayList<SpinnerModel> CustomListViewValuesArr=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr1=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr2=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr3=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArrTest=new ArrayList<>();
/*public ArrayList<SpinnerModel> CustomListViewValuesArr1Test=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr2Test=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr3Test=new ArrayList<>();*/
TextView output = null;
CustomSpinner activity = null;
NavigationView navigationView;
CustomAdapter adapter,adapter1,adapter2,adapter3,adapterTest,adapter1Test,adapter2Test,adapter3Test;
int i=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_custom_spinner);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle("Movies");
setSupportActionBar(toolbar);
activity = this;
Spinner SpinnerExample = (Spinner) findViewById(R.id.spinner);
Spinner SpinnerExample1 = (Spinner) findViewById(R.id.spinner1);
Spinner SpinnerExample2 = (Spinner) findViewById(R.id.spinner2);
Spinner SpinnerExample3 = (Spinner) findViewById(R.id.spinner3);
MySpinner SpinnerExampleTest = (MySpinner) findViewById(R.id.spinnerTest);
/* Spinner SpinnerExampleTest = (Spinner) findViewById(R.id.spinnerTest);
Spinner SpinnerExampleTest1 = (Spinner) findViewById(R.id.spinner1Test);
Spinner SpinnerExampleTest2 = (Spinner) findViewById(R.id.spinner2Test);
Spinner SpinnerExampleTest3 = (Spinner) findViewById(R.id.spinner3Test);*/
output = (TextView)findViewById(R.id.output);
setListData();
setListData1();
setListData2();
setListData3();
setListDataTest();
/* setListData1Test();
setListData2Test();
setListData3Test();*/
Resources res = getResources();
adapter = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr,res);
adapter1 = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr1,res);
adapter2 = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr2,res);
adapter3 = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr3,res);
adapterTest = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArrTest,res);
/* adapter1Test = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr1Test,res);
adapter2Test = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr2Test,res);
adapter3Test = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr3Test,res);*/
SpinnerExample.setAdapter(adapter);
SpinnerExample.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
i++; //Avoid fist time oppening the OnClick start new intent. First time is for set pic of the first element in the list.
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
if(i>1){
Intent intent = new Intent(CustomSpinner.this, MovieTrailer.class);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SpinnerExample1.setAdapter(adapter1);
SpinnerExample1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
i++; //Avoid fist time oppening the OnClick start new intent. First time is for set pic of the first element in the list.
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
if(i>2){
Intent intent = new Intent(CustomSpinner.this, MovieTrailer.class);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SpinnerExample2.setAdapter(adapter2);
SpinnerExample2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getApplicationContext(), "HERE" , Toast.LENGTH_SHORT).show();
i++; //Avoid fist time oppening the OnClick start new intent. First time is for set pic of the first element in the list.
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
if(i>3){
Intent intent = new Intent(CustomSpinner.this, MovieTrailer.class);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView arg0) {
Toast.makeText(getApplicationContext(), (CharSequence) "HERE AGAIN", Toast.LENGTH_SHORT).show();
}
});
SpinnerExample3.setAdapter(adapter3);
SpinnerExample3.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
i++; //Avoid fist time oppening the OnClick start new intent. First time is for set pic of the first element in the list.
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
if(i>4){
Intent intent = new Intent(CustomSpinner.this, MovieTrailer.class);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
//********************************************************TEST COMPONENTS******************************************************************//
SpinnerExampleTest.setAdapter(adapterTest);
SpinnerExampleTest.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getApplicationContext(), (CharSequence) "HERE", Toast.LENGTH_SHORT).show();
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
Toast.makeText(getApplicationContext(), (CharSequence) "HERE AGAIN", Toast.LENGTH_SHORT).show();
}
});
/* SpinnerExampleTest1.setAdapter(adapter1Test);
SpinnerExampleTest1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SpinnerExampleTest2.setAdapter(adapter2Test);
SpinnerExampleTest2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SpinnerExampleTest3.setAdapter(adapter3Test);
SpinnerExampleTest3.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
*/
//**************************************************TEST COMPONENTS**************************************************************************************//
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
/* fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});*/
}
public void setListData(){
String moy[] = {"DEN UNGE ZLATAN/BECOMING ZLATAN","THE SWEDISH THEORY OF LOVE","JONAS E O CIRCO SEM LONA/JONAS AND THE BACKYARD CIRCUS","ZID SMRTI, I TAKO TO/WALL OF DEATH, AND ALL",
"ПОСЛАННИКИ БОЛЬШОЙ ЗЕМЛИ/ SIBERIAN FLOATING HOSPITAL","FIGURA/FIGURE","1","2","3","1","2","3"};
for(int i=0;i<moy.length;i++){
final SpinnerModel sched = new SpinnerModel();
sched.setMovieName(moy[i]);
sched.setImage("image1"+i);
CustomListViewValuesArr.add(sched);
}
}
public void setListData1(){
String moy1[] = {"EL BOTÓN DE NÁCAR/PEARL","BRØDRE/BROTHERS 2015 110’","V LUCHAKH SOLNCA/UNDER THE SUN","KANTON JUGOSLAWIEN/LITTLE YUGOSLAVIA","1","2","3","1","2","3","1","2","3","1","2","3"};
for(int i=0;i<moy1.length;i++){
final SpinnerModel sched1 = new SpinnerModel();
sched1.setMovieName(moy1[i]);
sched1.setImage("image2"+i);
CustomListViewValuesArr1.add(sched1);
}
}
public void setListData2(){
String moy2[] = {"JUST ANOTHER DAY IN EGYPT","THE PERFECT CIRCLE","MOJ NAROBE SVET/MY WORLD IS UPSIDE DOWN","1","2","3","1","2","3","1","2","3","1","2","3"};
for(int i=0;i<moy2.length;i++){
final SpinnerModel sched2 = new SpinnerModel();
sched2.setMovieName(moy2[i]);
sched2.setImage("image3"+i);
CustomListViewValuesArr2.add(sched2);
}
}
public void setListData3(){
String moy3[] = {"BREZMEJNO/BEYOND BOUNDARIES","SOMETHING ABOUT LIFE","NA KRAYU/ON THE EDGE","JAMEY’S GEVECHT/JAMEY’S FIGHT","SCHWERELOS/ZERO-G"};
for(int i=0;i<moy3.length;i++){
final SpinnerModel sched3 = new SpinnerModel();
sched3.setMovieName(moy3[i]);
sched3.setImage("image4"+i);
CustomListViewValuesArr3.add(sched3);
}
}
//**************************************************TEST COMPONENTS**************************************************************************************//
public void setListDataTest(){
String moyTest[] = {"MovieTest1","MovieTest2","MovieTest2"};
for(int i=0;i<moyTest.length;i++){
final SpinnerModel schedTest = new SpinnerModel();
schedTest.setMovieName(moyTest[i]);
schedTest.setImage("image"+i);
CustomListViewValuesArrTest.add(schedTest);
}
}
/* public void setListData1Test(){
String moy1Test[] = {"MovieTest1","MovieTest1","Movie1","Movie1"};
for(int i=0;i<moy1Test.length;i++){
final SpinnerModel sched1Test = new SpinnerModel();
sched1Test.setMovieName(moy1Test[i]);
sched1Test.setImage("image"+i);
CustomListViewValuesArr1Test.add(sched1Test);
}
}
public void setListData2Test(){
String moy2Test[] = {"MovieTest1","MovieTest2","Movie3"};
for(int i=0;i<moy2Test.length;i++){
final SpinnerModel sched2Test = new SpinnerModel();
sched2Test.setMovieName(moy2Test[i]);
sched2Test.setImage("image"+i);
CustomListViewValuesArr2Test.add(sched2Test);
}
}
public void setListData3Test(){
String moy3Test[] = {"Movie1","Movie2","Movie3"};
for(int i=0;i<moy3Test.length;i++){
final SpinnerModel sched3Test = new SpinnerModel();
sched3Test.setMovieName(moy3Test[i]);
sched3Test.setImage("image"+i);
CustomListViewValuesArr3Test.add(sched3Test);
}
}
*/
//**************************************************TEST COMPONENTS**************************************************************************************//
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camara) {
Intent intent = new Intent(CustomSpinner.this, MainScreen.class);
startActivity(intent);
Toast.makeText(getBaseContext(), "Program", Toast.LENGTH_LONG).show();
//Set the fragment initially
// Handle the camera action
} else if (id == R.id.nav_gallery) {
Intent i = new Intent(CustomSpinner.this, CustomSpinner.class);
startActivity(i);
Toast.makeText(getBaseContext(), "Movies", Toast.LENGTH_LONG).show();
} else if (id == R.id.nav_slideshow) {
Intent intent = new Intent(CustomSpinner.this, BasicActivity.class);
startActivity(intent);
Toast.makeText(getBaseContext(), "Timeline", Toast.LENGTH_LONG).show();
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
//Intent intent = new Intent(MainScreen.this, MapsActivity.class);
// startActivity(intent);
// Toast.makeText(getBaseContext(), "Maps", Toast.LENGTH_LONG).show();
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
class MySpinner 包含此代码：
public class MySpinner extends Spinner {
OnItemSelectedListener listener;
public MySpinner(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public void setSelection(int position) {
super.setSelection(position);
if (listener != null)
listener.onItemSelected(null, null, position, 0);
}
public void setOnItemSelectedEvenIfUnchangedListener(
AdapterView.OnItemSelectedListener listener) {
this.listener = listener;
}
}
当打开这个 Activity 我有这个错误，应用程序崩溃了。
/com.example.ilija.festivalapp_makedox E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.ilija.festivalapp_makedox, PID: 12914
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.ilija.festivalapp_makedox/com.example.ilija.festivalapp_makedox.CustomSpinner}: java.lang.ClassCastException: android.support.v7.widget.AppCompatSpinner cannot be cast to com.example.ilija.festivalapp_makedox.MySpinner
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2596)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2653)
at android.app.ActivityThread.access0(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5872)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassCastException: android.support.v7.widget.AppCompatSpinner cannot be cast to com.example.ilija.festivalapp_makedox.MySpinner
at com.example.ilija.festivalapp_makedox.CustomSpinner.onCreate(CustomSpinner.java:56)
at android.app.Activity.performCreate(Activity.java:5312)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2552)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2653)
at android.app.ActivityThread.access0(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5872)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)
at dalvik.system.NativeStart.main(Native Method)
我猜layout.activity_custom_spinner.xml是这样的：
<Spinner id="@+id/spinnerTest" ...>
应该是这样的：
<MySpinner id="@+id/spinnerTest" ...>
MySpinner 可以扩展 android.support.v7.widget.AppCompatSpinner.
https://developer.android.com/reference/android/support/v7/widget/AppCompatSpinner.html
This will automatically be used when you use Spinner in your layouts.
You should only need to manually use this class when writing custom
views.
我正在尝试从微调器中选择的相同项目触发事件。我发现 class 称为 MySpinner，它扩展了 Spinner，但显然我在实现时遇到了问题。
package com.example.ilija.festivalapp_makedox;
import android.content.Intent;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.NavigationView;
import android.support.design.widget.Snackbar;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.util.Log;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;
import com.example.ilija.festivalapp_makedox.MySpinner;
import com.example.ilija.festivalapp_makedox.agendacalendarview.CalendarPickerController;
import java.util.ArrayList;
public class CustomSpinner extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {
public ArrayList<SpinnerModel> CustomListViewValuesArr=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr1=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr2=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr3=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArrTest=new ArrayList<>();
/*public ArrayList<SpinnerModel> CustomListViewValuesArr1Test=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr2Test=new ArrayList<>();
public ArrayList<SpinnerModel> CustomListViewValuesArr3Test=new ArrayList<>();*/
TextView output = null;
CustomSpinner activity = null;
NavigationView navigationView;
CustomAdapter adapter,adapter1,adapter2,adapter3,adapterTest,adapter1Test,adapter2Test,adapter3Test;
int i=0;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_custom_spinner);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
toolbar.setTitle("Movies");
setSupportActionBar(toolbar);
activity = this;
Spinner SpinnerExample = (Spinner) findViewById(R.id.spinner);
Spinner SpinnerExample1 = (Spinner) findViewById(R.id.spinner1);
Spinner SpinnerExample2 = (Spinner) findViewById(R.id.spinner2);
Spinner SpinnerExample3 = (Spinner) findViewById(R.id.spinner3);
MySpinner SpinnerExampleTest = (MySpinner) findViewById(R.id.spinnerTest);
/* Spinner SpinnerExampleTest = (Spinner) findViewById(R.id.spinnerTest);
Spinner SpinnerExampleTest1 = (Spinner) findViewById(R.id.spinner1Test);
Spinner SpinnerExampleTest2 = (Spinner) findViewById(R.id.spinner2Test);
Spinner SpinnerExampleTest3 = (Spinner) findViewById(R.id.spinner3Test);*/
output = (TextView)findViewById(R.id.output);
setListData();
setListData1();
setListData2();
setListData3();
setListDataTest();
/* setListData1Test();
setListData2Test();
setListData3Test();*/
Resources res = getResources();
adapter = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr,res);
adapter1 = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr1,res);
adapter2 = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr2,res);
adapter3 = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr3,res);
adapterTest = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArrTest,res);
/* adapter1Test = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr1Test,res);
adapter2Test = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr2Test,res);
adapter3Test = new CustomAdapter(activity,R.layout.spinner_rows,CustomListViewValuesArr3Test,res);*/
SpinnerExample.setAdapter(adapter);
SpinnerExample.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
i++; //Avoid fist time oppening the OnClick start new intent. First time is for set pic of the first element in the list.
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
if(i>1){
Intent intent = new Intent(CustomSpinner.this, MovieTrailer.class);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SpinnerExample1.setAdapter(adapter1);
SpinnerExample1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
i++; //Avoid fist time oppening the OnClick start new intent. First time is for set pic of the first element in the list.
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
if(i>2){
Intent intent = new Intent(CustomSpinner.this, MovieTrailer.class);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SpinnerExample2.setAdapter(adapter2);
SpinnerExample2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getApplicationContext(), "HERE" , Toast.LENGTH_SHORT).show();
i++; //Avoid fist time oppening the OnClick start new intent. First time is for set pic of the first element in the list.
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
if(i>3){
Intent intent = new Intent(CustomSpinner.this, MovieTrailer.class);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView arg0) {
Toast.makeText(getApplicationContext(), (CharSequence) "HERE AGAIN", Toast.LENGTH_SHORT).show();
}
});
SpinnerExample3.setAdapter(adapter3);
SpinnerExample3.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
i++; //Avoid fist time oppening the OnClick start new intent. First time is for set pic of the first element in the list.
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
if(i>4){
Intent intent = new Intent(CustomSpinner.this, MovieTrailer.class);
startActivity(intent);
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
//********************************************************TEST COMPONENTS******************************************************************//
SpinnerExampleTest.setAdapter(adapterTest);
SpinnerExampleTest.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(getApplicationContext(), (CharSequence) "HERE", Toast.LENGTH_SHORT).show();
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
Toast.makeText(getApplicationContext(), (CharSequence) "HERE AGAIN", Toast.LENGTH_SHORT).show();
}
});
/* SpinnerExampleTest1.setAdapter(adapter1Test);
SpinnerExampleTest1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SpinnerExampleTest2.setAdapter(adapter2Test);
SpinnerExampleTest2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
SpinnerExampleTest3.setAdapter(adapter3Test);
SpinnerExampleTest3.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
String Movie = ((TextView) view.findViewById(R.id.movieName)).getText().toString();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
});
*/
//**************************************************TEST COMPONENTS**************************************************************************************//
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
/* fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});*/
}
public void setListData(){
String moy[] = {"DEN UNGE ZLATAN/BECOMING ZLATAN","THE SWEDISH THEORY OF LOVE","JONAS E O CIRCO SEM LONA/JONAS AND THE BACKYARD CIRCUS","ZID SMRTI, I TAKO TO/WALL OF DEATH, AND ALL",
"ПОСЛАННИКИ БОЛЬШОЙ ЗЕМЛИ/ SIBERIAN FLOATING HOSPITAL","FIGURA/FIGURE","1","2","3","1","2","3"};
for(int i=0;i<moy.length;i++){
final SpinnerModel sched = new SpinnerModel();
sched.setMovieName(moy[i]);
sched.setImage("image1"+i);
CustomListViewValuesArr.add(sched);
}
}
public void setListData1(){
String moy1[] = {"EL BOTÓN DE NÁCAR/PEARL","BRØDRE/BROTHERS 2015 110’","V LUCHAKH SOLNCA/UNDER THE SUN","KANTON JUGOSLAWIEN/LITTLE YUGOSLAVIA","1","2","3","1","2","3","1","2","3","1","2","3"};
for(int i=0;i<moy1.length;i++){
final SpinnerModel sched1 = new SpinnerModel();
sched1.setMovieName(moy1[i]);
sched1.setImage("image2"+i);
CustomListViewValuesArr1.add(sched1);
}
}
public void setListData2(){
String moy2[] = {"JUST ANOTHER DAY IN EGYPT","THE PERFECT CIRCLE","MOJ NAROBE SVET/MY WORLD IS UPSIDE DOWN","1","2","3","1","2","3","1","2","3","1","2","3"};
for(int i=0;i<moy2.length;i++){
final SpinnerModel sched2 = new SpinnerModel();
sched2.setMovieName(moy2[i]);
sched2.setImage("image3"+i);
CustomListViewValuesArr2.add(sched2);
}
}
public void setListData3(){
String moy3[] = {"BREZMEJNO/BEYOND BOUNDARIES","SOMETHING ABOUT LIFE","NA KRAYU/ON THE EDGE","JAMEY’S GEVECHT/JAMEY’S FIGHT","SCHWERELOS/ZERO-G"};
for(int i=0;i<moy3.length;i++){
final SpinnerModel sched3 = new SpinnerModel();
sched3.setMovieName(moy3[i]);
sched3.setImage("image4"+i);
CustomListViewValuesArr3.add(sched3);
}
}
//**************************************************TEST COMPONENTS**************************************************************************************//
public void setListDataTest(){
String moyTest[] = {"MovieTest1","MovieTest2","MovieTest2"};
for(int i=0;i<moyTest.length;i++){
final SpinnerModel schedTest = new SpinnerModel();
schedTest.setMovieName(moyTest[i]);
schedTest.setImage("image"+i);
CustomListViewValuesArrTest.add(schedTest);
}
}
/* public void setListData1Test(){
String moy1Test[] = {"MovieTest1","MovieTest1","Movie1","Movie1"};
for(int i=0;i<moy1Test.length;i++){
final SpinnerModel sched1Test = new SpinnerModel();
sched1Test.setMovieName(moy1Test[i]);
sched1Test.setImage("image"+i);
CustomListViewValuesArr1Test.add(sched1Test);
}
}
public void setListData2Test(){
String moy2Test[] = {"MovieTest1","MovieTest2","Movie3"};
for(int i=0;i<moy2Test.length;i++){
final SpinnerModel sched2Test = new SpinnerModel();
sched2Test.setMovieName(moy2Test[i]);
sched2Test.setImage("image"+i);
CustomListViewValuesArr2Test.add(sched2Test);
}
}
public void setListData3Test(){
String moy3Test[] = {"Movie1","Movie2","Movie3"};
for(int i=0;i<moy3Test.length;i++){
final SpinnerModel sched3Test = new SpinnerModel();
sched3Test.setMovieName(moy3Test[i]);
sched3Test.setImage("image"+i);
CustomListViewValuesArr3Test.add(sched3Test);
}
}
*/
//**************************************************TEST COMPONENTS**************************************************************************************//
@SuppressWarnings("StatementWithEmptyBody")
@Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camara) {
Intent intent = new Intent(CustomSpinner.this, MainScreen.class);
startActivity(intent);
Toast.makeText(getBaseContext(), "Program", Toast.LENGTH_LONG).show();
//Set the fragment initially
// Handle the camera action
} else if (id == R.id.nav_gallery) {
Intent i = new Intent(CustomSpinner.this, CustomSpinner.class);
startActivity(i);
Toast.makeText(getBaseContext(), "Movies", Toast.LENGTH_LONG).show();
} else if (id == R.id.nav_slideshow) {
Intent intent = new Intent(CustomSpinner.this, BasicActivity.class);
startActivity(intent);
Toast.makeText(getBaseContext(), "Timeline", Toast.LENGTH_LONG).show();
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
//Intent intent = new Intent(MainScreen.this, MapsActivity.class);
// startActivity(intent);
// Toast.makeText(getBaseContext(), "Maps", Toast.LENGTH_LONG).show();
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
class MySpinner 包含此代码：
public class MySpinner extends Spinner {
OnItemSelectedListener listener;
public MySpinner(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
public void setSelection(int position) {
super.setSelection(position);
if (listener != null)
listener.onItemSelected(null, null, position, 0);
}
public void setOnItemSelectedEvenIfUnchangedListener(
AdapterView.OnItemSelectedListener listener) {
this.listener = listener;
}
}
当打开这个 Activity 我有这个错误，应用程序崩溃了。
/com.example.ilija.festivalapp_makedox E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.ilija.festivalapp_makedox, PID: 12914
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.ilija.festivalapp_makedox/com.example.ilija.festivalapp_makedox.CustomSpinner}: java.lang.ClassCastException: android.support.v7.widget.AppCompatSpinner cannot be cast to com.example.ilija.festivalapp_makedox.MySpinner
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2596)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2653)
at android.app.ActivityThread.access0(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5872)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.ClassCastException: android.support.v7.widget.AppCompatSpinner cannot be cast to com.example.ilija.festivalapp_makedox.MySpinner
at com.example.ilija.festivalapp_makedox.CustomSpinner.onCreate(CustomSpinner.java:56)
at android.app.Activity.performCreate(Activity.java:5312)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1111)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2552)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2653)
at android.app.ActivityThread.access0(ActivityThread.java:156)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1355)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5872)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:674)
at dalvik.system.NativeStart.main(Native Method)
我猜layout.activity_custom_spinner.xml是这样的：
<Spinner id="@+id/spinnerTest" ...>
应该是这样的：
<MySpinner id="@+id/spinnerTest" ...>
MySpinner 可以扩展 android.support.v7.widget.AppCompatSpinner.
https://developer.android.com/reference/android/support/v7/widget/AppCompatSpinner.html
This will automatically be used when you use Spinner in your layouts. You should only need to manually use this class when writing custom views.