按钮点击事件未触发
Button click event not getting triggered
我在 table 布局中定义了一组按钮。
custom_layout.xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingBottom="10dp"
android:id="@+id/tableLayout">
<TableRow
android:layout_weight="1">
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/firstBtn"
android:text="F"
android:layout_weight="0.3">
</Button>
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/secondBtn"
android:text="S"
android:layout_weight="0.3">
</Button>
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/thirdBtn"
android:text="T"
android:layout_weight="0.3">
</Button>
</TableRow>
</TableLayout>
</RelativeLayout>
此 XML 设置为自定义警报对话框中的布局。
代码:
public class CustomDialogPreference extends DialogPreference {
private Button firstBtn = null;
private Button secondBtn = null;
private Button thirdBtn = null;
public CustomDialogPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setPersistent(false);
this.context = context;
setDialogLayoutResource(R.layout.custom_layout);
}
@Override
protected void onBindDialogView(View view) {
firstBtn = (Button)view.findViewById(R.id.firstBtn);
secondBtn = (Button)view.findViewById(R.id.secondBtn);
thirdBtn = (Button)view.findViewById(R.id.thirdBtn);
firstBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("Check","First button is clicked"));
}
});
secondBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("Check","Second button is clicked"));
}
});
thirdBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("Check","Third button is clicked"));
}
});
super.onBindDialogView(view);
}
@Override
protected void onDialogClosed(boolean positiveResult) {
super.onDialogClosed(positiveResult);
persistBoolean(positiveResult);
Log.d("Blockout","Dialog close detected");
if(positiveResult)
{
Log.d("Blockout","Save button had been clicked");
}
}
}
打开对话框并单击按钮时,我看不到相应的日志消息。我也没有收到任何空指针异常,所以我认为视图已正确设置和访问。知道我错过了什么吗?
如果您想要自定义对话框,我建议您使用 DialogFragment
class。有关于这些的文档指南 - Dialogs.
我想你需要这个方法 - onCreateDialogView
。
例如,
public class CustomDialogPreference extends DialogPreference
implements View.OnClickListener {
private Context context;
public CustomDialogPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setPersistent(false);
this.context = context;
}
@Override
protected View onCreateDialogView() {
super.onCreateDialogView();
LayoutInflater inflater = LayoutInflater.from(this.context);
View rootView = inflater.inflate(R.layout.custom_layout,null);
rootView.findViewById(R.id.firstBtn).setOnClickListener(this);
rootView.findViewById(R.id.secondBtn).setOnClickListener(this);
return rootView;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.firstBtn:
Log.d("Check","First button is clicked"));
break;
case R.id.secondBtn:
break;
}
}
我在 table 布局中定义了一组按钮。
custom_layout.xml :
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<TableLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingBottom="10dp"
android:id="@+id/tableLayout">
<TableRow
android:layout_weight="1">
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/firstBtn"
android:text="F"
android:layout_weight="0.3">
</Button>
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/secondBtn"
android:text="S"
android:layout_weight="0.3">
</Button>
<Button
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/thirdBtn"
android:text="T"
android:layout_weight="0.3">
</Button>
</TableRow>
</TableLayout>
</RelativeLayout>
此 XML 设置为自定义警报对话框中的布局。
代码:
public class CustomDialogPreference extends DialogPreference {
private Button firstBtn = null;
private Button secondBtn = null;
private Button thirdBtn = null;
public CustomDialogPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setPersistent(false);
this.context = context;
setDialogLayoutResource(R.layout.custom_layout);
}
@Override
protected void onBindDialogView(View view) {
firstBtn = (Button)view.findViewById(R.id.firstBtn);
secondBtn = (Button)view.findViewById(R.id.secondBtn);
thirdBtn = (Button)view.findViewById(R.id.thirdBtn);
firstBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("Check","First button is clicked"));
}
});
secondBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("Check","Second button is clicked"));
}
});
thirdBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Log.d("Check","Third button is clicked"));
}
});
super.onBindDialogView(view);
}
@Override
protected void onDialogClosed(boolean positiveResult) {
super.onDialogClosed(positiveResult);
persistBoolean(positiveResult);
Log.d("Blockout","Dialog close detected");
if(positiveResult)
{
Log.d("Blockout","Save button had been clicked");
}
}
}
打开对话框并单击按钮时,我看不到相应的日志消息。我也没有收到任何空指针异常,所以我认为视图已正确设置和访问。知道我错过了什么吗?
如果您想要自定义对话框,我建议您使用 DialogFragment
class。有关于这些的文档指南 - Dialogs.
我想你需要这个方法 - onCreateDialogView
。
例如,
public class CustomDialogPreference extends DialogPreference
implements View.OnClickListener {
private Context context;
public CustomDialogPreference(Context context, AttributeSet attrs) {
super(context, attrs);
setPersistent(false);
this.context = context;
}
@Override
protected View onCreateDialogView() {
super.onCreateDialogView();
LayoutInflater inflater = LayoutInflater.from(this.context);
View rootView = inflater.inflate(R.layout.custom_layout,null);
rootView.findViewById(R.id.firstBtn).setOnClickListener(this);
rootView.findViewById(R.id.secondBtn).setOnClickListener(this);
return rootView;
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.firstBtn:
Log.d("Check","First button is clicked"));
break;
case R.id.secondBtn:
break;
}
}