主文件
package cn.com.sxp;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;
public class AlertDialogActivity extends Activity implements OnClickListener {
private Button btnOne = null;
private Button btnTwo = null;
private Button btnThree = null;
private AlertDialog.Builder builder = null;
private AlertDialog alert = null;
final CharSequence[] items = {"红", "绿", "蓝"};
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
btnOne = (Button) findViewById(R.id.btnOne);
btnTwo = (Button) findViewById(R.id.btnTwo);
btnThree = (Button) findViewById(R.id.btnThree);
btnOne.setOnClickListener(this);
btnTwo.setOnClickListener(this);
btnThree.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnOne:
// Builder构造函数
// Constructor using a context for this builder and the AlertDialog it creates.
builder = new AlertDialog.Builder(this);
// setMessage:
// Set the message to display.
builder.setMessage("我乃石大虾")
// setCancelable
// Sets whether the dialog is cancelable or not. Default is true.
.setCancelable(false)
// setPositiveButton
// Set a listener to be invoked when the positive button of the dialog is pressed.
.setPositiveButton("是", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
AlertDialogActivity.this.finish();
}
})
.setNegativeButton("不", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
dialog.cancel();
}
});
alert = builder.create();
alert.show();
break;
case R.id.btnTwo:
builder = new AlertDialog.Builder(this);
builder.setTitle("请选择一种颜色");
// setItems
// Set a list of items to be displayed in the dialog as the content, you will be notified of the selected item via the supplied listener.
builder.setItems(items, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
}
});
alert = builder.create();
alert.show();
break;
case R.id.btnThree:
builder = new AlertDialog.Builder(this);
builder.setTitle("请选择一种颜色,与上面不一样");
// setSingleChoiceItems
// Set a list of items to be displayed in the dialog as the content, you will be notified of the selected item via the supplied listener. The list
// will have a check mark displayed to the right of the text for the checked item. Clicking on an item in the list will not dismiss the dialog.
// Clicking on a button will dismiss the dialog.
// -1表示没有相被选择
// builder.setMultiChoiceItems(items, -1, listener)
builder.setSingleChoiceItems(items, -1, new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
Toast.makeText(getApplicationContext(), items[item], Toast.LENGTH_SHORT).show();
}
});
alert = builder.create();
alert.show();
default:
}
}
}
XML文件
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/btnOne"
android:text="一般" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/btnTwo"
android:text="列表" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/btnThree"
android:text="可选" />
</LinearLayout>
运行效果:
点击一;
点击二;
点击三