package cn.testalertdialog; import android.app.Activity; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.WindowManager; import android.widget.Button; /** * Demo描述: * 利用WindowManager在屏幕任意位置添加和移除"自定义对话框" * 本质上是使用了WindowManager在屏幕上添加了View,只是 * 我们把这个View做成了常见的对话框的样式 * * 参考资料: * http://blog.csdn.net/lfdfhl/article/details/8195466 * */ public class MainActivity extends Activity { private View mDialogView; private WindowManager mWindowManager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); init(); } private void init() { mWindowManager = getWindowManager(); LayoutInflater inflater = (LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE); mDialogView = inflater.inflate(R.layout.dialogview, null); WindowManager.LayoutParams params = new WindowManager.LayoutParams(); params.height = WindowManager.LayoutParams.WRAP_CONTENT; params.width = WindowManager.LayoutParams.WRAP_CONTENT; params.y += 100; params.x += -30; initDialogComponents(mDialogView); //添加对话框 mWindowManager.addView(mDialogView, params); } //初始化自定义对话框中的控件 private void initDialogComponents(View dialogView){ Button firstButton=(Button) dialogView.findViewById(R.id.dialog_firstButton); firstButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { System.out.println("点击了第一个Button"); } }); Button secondButton=(Button) dialogView.findViewById(R.id.dialog_secondButton); secondButton.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (mDialogView!=null) { //移除对话框 mWindowManager.removeView(mDialogView); } } }); } }
main.xml如下:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="fill_parent" android:layout_height="fill_parent" > <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="利用WindowManager在屏幕任意位置添加自定义对话" android:textSize="20sp" android:layout_centerHorizontal="true" /> </RelativeLayout>
dialogview.xml如下:
<?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" > <Button android:id="@+id/dialog_firstButton" android:layout_width="150dip" android:layout_height="50dip" android:text="点击Button" android:layout_gravity="center_horizontal" /> <Button android:id="@+id/dialog_secondButton" android:layout_width="150dip" android:layout_height="50dip" android:text="移除对话框" android:layout_gravity="center_horizontal" /> </LinearLayout>