Android 自定义AlertDialog退出对话框
转 https://blog.csdn.net/wkh11/article/details/53081634
在项目中很多时候会出现点击返回键出现提示对话框。
不多说了,先看效果图
直接上代码
layout布局的名字是close_program
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:andro />
</LinearLayout>
</RelativeLayout>
</RelativeLayout>
其中有个布局的背景是圆角矩形的设置
画圆角矩形的代码 tab_rectangle
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:andro/>
</shape>
Activity中的返回键的操作代码:
public boolean onKeyDown(int keyCode, KeyEvent event) {
if(keyCode == KeyEvent.KEYCODE_BACK || keyCode == KeyEvent.KEYCODE_HOME){
showExitGameAlert();
}
return super.onKeyDown(keyCode, event);
}
//弹出对话框方法
private void showExitGameAlert() {
final AlertDialog dlg = new AlertDialog.Builder(this).create();
dlg.show();
Window window = dlg.getWindow();
window.setContentView(R.layout.closeprogram);
TextView tv = (TextView) window.findViewById(R.id.tv_no);
tv.setText("你确定要退出吗");
LinearLayout ok = (LinearLayout) window.findViewById(R.id.tv_ok);
//确定按钮
ok.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
exit(); // 退出应用
}
});
//取消按钮
LinearLayout cancel = (LinearLayout) window.findViewById(R.id.tv_cancel);
cancel.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
dlg.cancel();
}
});
}
//关闭程序
private void exit() {
super.finish();
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(0);
}
假设想改变Dialog的大小能够这样写:
AlertDialog dialog = getCustomDialog(); dialog.show(); //一定得在show完dialog后来set属性 WindowManager.LayoutParams lp = dialog.getWindow().getAttributes(); lp.width = AnimationTest.this.getResources().getDimensionPixelSize(R.dimen.dialog_width); lp.height = AnimationTest.this.getResources().getDimensionPixelSize(R.dimen.dialog_height); dialog.getWindow().setAttributes(lp);