Android取得屏幕截图主要使用了Bitmap类里的方法，首先取得一个bitmap然后用取得的bitmap去绘制一张图片然后进行保存。
代码如下：
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Rect;
import android.os.Environment;
import android.util.Log;
import android.view.View;
public class ShotScreen {
private static final String TAG="shotscreen";
@SuppressWarnings("unused")
private static Bitmap takeScreenShot(Activity activity){
View view =activity.getWindow().getDecorView();
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap bitmap = view.getDrawingCache();
Rect rect = new Rect();
activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);
int statusBarHeight = rect.top;
System.out.println(statusBarHeight);
int width = activity.getWindowManager().getDefaultDisplay().getWidth();
int height = activity.getWindowManager().getDefaultDisplay().getHeight();
Bitmap bitmap2 = Bitmap.createBitmap(bitmap,0,statusBarHeight, width, height - statusBarHeight);
view.destroyDrawingCache();
return bitmap2;
}
@SuppressWarnings("unused")
private static void savePic(Bitmap bitmap,String filename){
FileOutputStream fileOutputStream = null;
try {
fileOutputStream = new FileOutputStream(filename);
if (fileOutputStream != null) {
bitmap.compress(Bitmap.CompressFormat.PNG, 90, fileOutputStream);
fileOutputStream.flush();
fileOutputStream.close();
}
}
catch (FileNotFoundException e) {
Log.d(TAG, "Exception:FileNotFoundException");
e.printStackTrace();
}
catch (IOException e) {
Log.d(TAG, "IOException:IOException");
e.printStackTrace();
}
}
public static void shoot(Activity a){
if (android.os.Environment.MEDIA_MOUNTED != "mounted") {
ShotScreen.savePic(ShotScreen.takeScreenShot(a), "/sdcard/抽样.png");
}
else{
ShotScreen.savePic(ShotScreen.takeScreenShot(a), "/data/data/"+a.getPackageName()+"/抽样.png");
}
}
}
接着在main.xml中加入一个Button
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="获得截图"
/>
