Dialog(九)——利用WindowManager在螢幕任意位置添加Dialog

標籤：android   c   class   blog   code   java   

MainActivity如下:

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在螢幕任意位置添加和移除"自訂對話方塊" * 本質上是使用了WindowManager在螢幕上添加了View,只是 * 我們把這個View做成了常見的對話方塊的樣式 *  * 參考資料: * http://blog.csdn.net/lfdfhl/article/details/8195466 *  */public class MainActivity extends Activity {    private View mDialogView;    private WindowManager mWindowManager;@Overrideprotected 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);//添加對話方塊mWindowManager.addView(mDialogView, params);}//初始化自訂對話方塊中的控制項private void initDialogComponents(View dialogView){  Button firstButton=(Button) dialogView.findViewById(R.id.dialog_firstButton);  firstButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {System.out.println("點擊了第一個Button");}});    Button secondButton=(Button) dialogView.findViewById(R.id.dialog_secondButton);  secondButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {if (mDialogView!=null) {//移除對話方塊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在螢幕任意位置添加自訂對話"         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="點擊Button"        android:layout_gravity="center_horizontal"        />         <Button         android:id="@+id/dialog_secondButton"        android:layout_width="150dip"        android:layout_height="50dip"        android:text="移除對話方塊"        android:layout_gravity="center_horizontal"        /></LinearLayout>