代码：
//创建对话框方法dialog()
protected void dialog() {
AlertDialog.Builder builder = new Builder(Main.this);
builder.setMessage("确认退出吗？");
builder.setTitle("提示");
builder.setPositiveButton("确认", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
Main.this.finish();
}
});
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.create().show();
}
在onKeyDown(int keyCode, KeyEvent event)方法中调用此方法
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
dialog();
}
return false;
}
图1
图2效果：改变了对话框的图表，添加了三个按钮
Dialog dialog = new AlertDialog.Builder(this).setIcon(
android.R.drawable.btn_star).setTitle("喜好调查").setMessage(
"你喜欢李连杰的电影吗？").setPositiveButton("很喜欢",
new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(Main.this, "我很喜欢他的电影。",
Toast.LENGTH_LONG).show();
}
}).setNegativeButton("不喜欢", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(Main.this, "我不喜欢他的电影。", Toast.LENGTH_LONG)
.show();
}
}).setNeutralButton("一般", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
Toast.makeText(Main.this, "谈不上喜欢不喜欢。", Toast.LENGTH_LONG)
.show();
}
}).create();
dialog.show();
