如何将 phone 数组保存到 SharedPreference
How to save Array of phone number into SharedPreference
我想使用 SharedPreference 保存 phone 号码。因为它是从 phone 书中获取并在 textView 中设置的，所以我无法将它们中的每一个都保存在 SharedPreference 中。请帮助我了解如何通过 SharedPreference 保存和检索一组 phone 号码（数组或集合）并将其发送到另一个片段以发送号码。
Contact.java
package com.kamal.sos10;
import android.content.ContentResolver;
import android.content.Context;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.net.Uri;
import android.nfc.Tag;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.content.Intent;
import android.widget.TextView;
import android.widget.Toast;
import java.lang.reflect.Array;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public class Contact extends AppCompatActivity {
EditText msg,editText2,editText3,editText4;
Button con1,con2,con3;
TextView textView3,textView5,textView6,textView7,textView8,textView9;
TextView text1;
// static final int PICK_CONTACT = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contact);
msg=(EditText)findViewById(R.id.msg);
// editText2=(EditText)findViewById(R.id.editText2);
textView3=(TextView)findViewById(R.id.textView3);
// text1=(TextView)findViewById(R.id.first);
textView5=(TextView)findViewById(R.id.textView5);
textView6=(TextView)findViewById(R.id.textView6);
textView7=(TextView)findViewById(R.id.textView7);
textView8=(TextView)findViewById(R.id.textView8);
textView9=(TextView)findViewById(R.id.textView9);
con1=(Button)findViewById(R.id.con1);
con2=(Button)findViewById(R.id.con2);
con3=(Button)findViewById(R.id.con3);
con1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.putExtra("extra_text1", "1");
intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
if (intent.resolveActivity(Contact.this.getPackageManager()) != null) {
startActivityForResult(intent, 1);
}
}
});
con2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.putExtra("extra_text2", "2");
intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
if (intent.resolveActivity(Contact.this.getPackageManager()) != null) {
startActivityForResult(intent,2);
}
}
});
con3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.putExtra("extra_text3", "3");
intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
if (intent.resolveActivity(Contact.this.getPackageManager()) != null) {
startActivityForResult(intent, 3);
}
}
});
int num = Integer.valueOf(textView3.getText().toString());
int num2 = Integer.valueOf(textView6.getText().toString());
int num3 = Integer.valueOf(textView7.getText().toString());
Integer[] array=new Integer[3];
array[0]=num;
array[1]=num;
array[2]=num;
for (int j=0;j<3;j++)
{
Log.i("key", String.valueOf(array[j]));
}
/*
SharedPreferences sharedPreferences=this.getSharedPreferences("com.kamal.sos10", Context.MODE_PRIVATE);
SharedPreferences.Editor edit = sharedPreferences.edit();
edit.putInt("array_size", strings.length);
for(int i=0;i<strings.length; i++)
edit.putString("array_" + i, strings[i]);
edit.commit();
int size = sharedPreferences.getInt("array_size", 0);
strings = new String[size];
for(int i=0; i<size; i++) {
strings[i]= sharedPreferences.getString("array_" + i, null);
Log.i("sdert",strings[i]);
}
*/
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1 || requestCode == 2 || requestCode == 3) {
if (resultCode == this.RESULT_OK) {
contactPicked(data,requestCode);
}
}
}
private void contactPicked(Intent data,int req) {
ContentResolver cr = this.getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
cur.moveToFirst();
try {
// getData() method will have the Content Uri of the selected contact
Uri uri = data.getData();
//Query the content uri
cur = this.getContentResolver().query(uri, null, null, null, null);
cur.moveToFirst();
// column index of the contact ID
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
// column index of the contact name
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
// column index of the phone number
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
String phone = pCur.getString(
pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)).replaceAll(" ", "");
String text1 = getIntent().getStringExtra("extra_text1");
Toast.makeText(Contact.this, text1, Toast.LENGTH_SHORT).show();
if (req==1)
{
textView3.setText(phone);
Toast.makeText(Contact.this, textView3.getText(), Toast.LENGTH_SHORT).show();
int num = Integer.valueOf(textView3.getText().toString());
Log.i("yut", String.valueOf(num));
textView5.setText(name);
}
if (req==2)
{
textView6.setText(phone);
textView8.setText(name);
}
if (req==3)
{
textView7.setText(phone);
textView9.setText(name);
}
pCur.close();
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
您可以将 ArrayList/Array/List 保存到 SharedPrefernces 这是您的操作方法
//Retrieve the values
Set<String> set = myScores.getStringSet("key", null);
//Set the values
Set<String> set = new HashSet<String>();
set.addAll(listOfExistingScores);
scoreEditor.putStringSet("key", set);
scoreEditor.commit();
但你推荐 this link for details and this link 。这些都很有用，也很容易理解。
第二部分将数据发送到片段
好吧，我建议将数据保存在当前 Activity/Fragment 你拥有的任何东西中，然后从你希望打开的片段中的共享首选项中获取数据，但以防万一你真的想获得数据并将数据发送到片段请考虑 this link。
注：
By Looking at your code I think there could be large amount of contacts, so it means that you will have a large array. I will suggest you to store them in database as you can easily retrieve/update/delete any data and record.
更新：（在评论清楚后）
您已经编写代码以在 OnCreate 中从 Textview 中获取联系人，因为我认为 textview 中的联系人稍后会更新，而在它之前的 onCreate 运行 中的代码。
进行此更改
con3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//Just check it here
int num = Integer.valueOf(textView3.getText().toString());
int num2 = Integer.valueOf(textView6.getText().toString());
int num3 = Integer.valueOf(textView7.getText().toString());
Integer[] array=new Integer[3];
array[0]=num;
array[1]=num;
array[2]=num;
for (int j=0;j<3;j++)
{
Log.i("key", String.valueOf(array[j]));
}
}
});
在 api 级别 11 之后 Set 将存储在首选项中，因此将您的 Array 或 List 转换为 set 并存储在首选项中
Set<String> setNameYouWantToStore = new HashSet<String>();
setNameYouWantToStore.addAll(listOfDetails);
scoreEditor.putStringSet("keyForSet", setNameYouWantToStore);
scoreEditor.commit();
使用迭代器检索
Set<String> setNameYouWantToStore = new HashSet<String>();
Iterator iterator = setNameYouWantToStore.iterator();
while(iterator.hasNext()) {
System.out.println("Value: " + iterator.next() + " ");
}
我想使用 SharedPreference 保存 phone 号码。因为它是从 phone 书中获取并在 textView 中设置的，所以我无法将它们中的每一个都保存在 SharedPreference 中。请帮助我了解如何通过 SharedPreference 保存和检索一组 phone 号码（数组或集合）并将其发送到另一个片段以发送号码。
Contact.java
package com.kamal.sos10;
import android.content.ContentResolver;
import android.content.Context;
import android.content.SharedPreferences;
import android.database.Cursor;
import android.net.Uri;
import android.nfc.Tag;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.content.Intent;
import android.widget.TextView;
import android.widget.Toast;
import java.lang.reflect.Array;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
public class Contact extends AppCompatActivity {
EditText msg,editText2,editText3,editText4;
Button con1,con2,con3;
TextView textView3,textView5,textView6,textView7,textView8,textView9;
TextView text1;
// static final int PICK_CONTACT = 1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_contact);
msg=(EditText)findViewById(R.id.msg);
// editText2=(EditText)findViewById(R.id.editText2);
textView3=(TextView)findViewById(R.id.textView3);
// text1=(TextView)findViewById(R.id.first);
textView5=(TextView)findViewById(R.id.textView5);
textView6=(TextView)findViewById(R.id.textView6);
textView7=(TextView)findViewById(R.id.textView7);
textView8=(TextView)findViewById(R.id.textView8);
textView9=(TextView)findViewById(R.id.textView9);
con1=(Button)findViewById(R.id.con1);
con2=(Button)findViewById(R.id.con2);
con3=(Button)findViewById(R.id.con3);
con1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.putExtra("extra_text1", "1");
intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
if (intent.resolveActivity(Contact.this.getPackageManager()) != null) {
startActivityForResult(intent, 1);
}
}
});
con2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.putExtra("extra_text2", "2");
intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
if (intent.resolveActivity(Contact.this.getPackageManager()) != null) {
startActivityForResult(intent,2);
}
}
});
con3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Intent intent = new Intent(Intent.ACTION_PICK);
intent.putExtra("extra_text3", "3");
intent.setType(ContactsContract.Contacts.CONTENT_TYPE);
if (intent.resolveActivity(Contact.this.getPackageManager()) != null) {
startActivityForResult(intent, 3);
}
}
});
int num = Integer.valueOf(textView3.getText().toString());
int num2 = Integer.valueOf(textView6.getText().toString());
int num3 = Integer.valueOf(textView7.getText().toString());
Integer[] array=new Integer[3];
array[0]=num;
array[1]=num;
array[2]=num;
for (int j=0;j<3;j++)
{
Log.i("key", String.valueOf(array[j]));
}
/*
SharedPreferences sharedPreferences=this.getSharedPreferences("com.kamal.sos10", Context.MODE_PRIVATE);
SharedPreferences.Editor edit = sharedPreferences.edit();
edit.putInt("array_size", strings.length);
for(int i=0;i<strings.length; i++)
edit.putString("array_" + i, strings[i]);
edit.commit();
int size = sharedPreferences.getInt("array_size", 0);
strings = new String[size];
for(int i=0; i<size; i++) {
strings[i]= sharedPreferences.getString("array_" + i, null);
Log.i("sdert",strings[i]);
}
*/
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1 || requestCode == 2 || requestCode == 3) {
if (resultCode == this.RESULT_OK) {
contactPicked(data,requestCode);
}
}
}
private void contactPicked(Intent data,int req) {
ContentResolver cr = this.getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null);
cur.moveToFirst();
try {
// getData() method will have the Content Uri of the selected contact
Uri uri = data.getData();
//Query the content uri
cur = this.getContentResolver().query(uri, null, null, null, null);
cur.moveToFirst();
// column index of the contact ID
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
// column index of the contact name
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
// column index of the phone number
Cursor pCur = cr.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
String phone = pCur.getString(
pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)).replaceAll(" ", "");
String text1 = getIntent().getStringExtra("extra_text1");
Toast.makeText(Contact.this, text1, Toast.LENGTH_SHORT).show();
if (req==1)
{
textView3.setText(phone);
Toast.makeText(Contact.this, textView3.getText(), Toast.LENGTH_SHORT).show();
int num = Integer.valueOf(textView3.getText().toString());
Log.i("yut", String.valueOf(num));
textView5.setText(name);
}
if (req==2)
{
textView6.setText(phone);
textView8.setText(name);
}
if (req==3)
{
textView7.setText(phone);
textView9.setText(name);
}
pCur.close();
}
}
catch (Exception e) {
e.printStackTrace();
}
}
}
您可以将 ArrayList/Array/List 保存到 SharedPrefernces 这是您的操作方法
//Retrieve the values
Set<String> set = myScores.getStringSet("key", null);
//Set the values
Set<String> set = new HashSet<String>();
set.addAll(listOfExistingScores);
scoreEditor.putStringSet("key", set);
scoreEditor.commit();
但你推荐 this link for details and this link 。这些都很有用，也很容易理解。
第二部分将数据发送到片段
好吧，我建议将数据保存在当前 Activity/Fragment 你拥有的任何东西中，然后从你希望打开的片段中的共享首选项中获取数据，但以防万一你真的想获得数据并将数据发送到片段请考虑 this link。
注：
By Looking at your code I think there could be large amount of contacts, so it means that you will have a large array. I will suggest you to store them in database as you can easily retrieve/update/delete any data and record.
更新：（在评论清楚后）
您已经编写代码以在 OnCreate 中从 Textview 中获取联系人，因为我认为 textview 中的联系人稍后会更新，而在它之前的 onCreate 运行 中的代码。
进行此更改
con3.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
//Just check it here
int num = Integer.valueOf(textView3.getText().toString());
int num2 = Integer.valueOf(textView6.getText().toString());
int num3 = Integer.valueOf(textView7.getText().toString());
Integer[] array=new Integer[3];
array[0]=num;
array[1]=num;
array[2]=num;
for (int j=0;j<3;j++)
{
Log.i("key", String.valueOf(array[j]));
}
}
});
在 api 级别 11 之后 Set 将存储在首选项中，因此将您的 Array 或 List 转换为 set 并存储在首选项中
Set<String> setNameYouWantToStore = new HashSet<String>();
setNameYouWantToStore.addAll(listOfDetails);
scoreEditor.putStringSet("keyForSet", setNameYouWantToStore);
scoreEditor.commit();
使用迭代器检索
Set<String> setNameYouWantToStore = new HashSet<String>();
Iterator iterator = setNameYouWantToStore.iterator();
while(iterator.hasNext()) {
System.out.println("Value: " + iterator.next() + " ");
}