本文展示了一个Android应用程序中使用对话框的例子。通过三个不同的按钮触发三种类型的对话框，并详细展示了如何定义按钮点击监听器以及如何根据不同的按钮点击显示不同的对话框内容。
public class Test extends Activity {
/** Called when the activity is first created. */
private Button.OnClickListener button_listener = new Button.OnClickListener() {
public void onClick(View v) {
showDialog(1);
}
};
private Button.OnClickListener listener2 = new Button.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showDialog(2);
}
};
private Button.OnClickListener listener3 = new Button.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
showDialog(3);
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
init();
}
private void init() {
// TODO Auto-generated method stub
Button button1 = (Button) findViewById(R.id.button1);
Button button2 = (Button) findViewById(R.id.button2);
Button button3 = (Button) findViewById(R.id.button3);
button1.setOnClickListener(button_listener);
button2.setOnClickListener(listener2);
button3.setOnClickListener(listener3);
}
@Override
protected Dialog onCreateDialog(int id) {
switch (id) {
case 1: {
Dialog dialog = new AlertDialog.Builder(Test.this).setTitle("Question")
.setMessage("one111111111111111111111")// 设置内容
.setPositiveButton("Yes", // 设置确定按钮
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
setResult(RESULT_OK);
finish();
}
}).setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
}
}).create();// 创建
return dialog;
}
case 2: {
ScrollView sv = new ScrollView(this);
TextView tv = new TextView(this);
tv.setText("2");
sv.addView(tv);
Dialog dialog2 = new AlertDialog.Builder(Test.this).setTitle("Question")
.setView(sv)// 设置内容
.setPositiveButton("Yes", // 设置确定按钮
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
setResult(RESULT_OK);
finish();
}
}).setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
}
}).create();// 创建
return dialog2;
}
case 3: {
ScrollView sv = new ScrollView(this);
TextView tv = new TextView(this);
tv.setText("3");
sv.addView(tv);
Dialog dialog3 = new AlertDialog.Builder(Test.this).setTitle("Question")
.setView(sv)// 设置内容
.setPositiveButton("Yes", // 设置确定按钮
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
setResult(RESULT_OK);
finish();
}
}).setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
}
}).create();// 创建
return dialog3;
}
default: {
return null;
}
}
}
}
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