Android用代码截屏的方法 - SKY外语计算机学习

package com.lyc.test;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.view.Display;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class ScreenshotDemoActivity extends Activity {
private Button shotButton;
private ImageView imageView;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
shotButton=(Button)findViewById(R.id.shotButton);
imageView=(ImageView)findViewById(R.id.imageView);
shotButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//Bitmap-->Drawable
BitmapDrawable bd=new BitmapDrawable(shot());
imageView.setBackgroundDrawable(bd);
// imageView.setImageBitmap(shot());
}
});
}
/**
* 截屏方法
* @return
*/
private Bitmap shot() {
View view = getWindow().getDecorView();
Display display = this.getWindowManager().getDefaultDisplay();
view.layout(0, 0, display.getWidth(), display.getHeight());
view.setDrawingCacheEnabled(true);//允许当前窗口保存缓存信息，这样getDrawingCache()方法才会返回一个Bitmap
Bitmap bmp = Bitmap.createBitmap(view.getDrawingCache());
return bmp;
}
}
androidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="[url=http://schemas.android.com/apk/res/android]http://schemas.android.com/apk/res/android[/url]"
package="com.lyc.test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="10" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name" >
<activity
android:label="@string/app_name"
android:name=".ScreenshotDemoActivity" >
<intent-filter >
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="[url=http://schemas.android.com/apk/res/android]http://schemas.android.com/apk/res/android[/url]"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<ImageView android:id="@+id/imageView"
android:layout_width="fill_parent"
android:layout_height="350dip"
/>
<Button android:id="@+id/shotButton"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="shot"/>
<EditText
android:id="@+id/editText1"
android:layout_width="167dp"
android:layout_height="18dp" >
<requestFocus />
</EditText>
<RadioButton
android:id="@+id/radioButton1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="RadioButton" />
</LinearLayout>

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