android截圖代碼小記

靜態

View Code

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.media.MediaMetadataRetriever;import android.util.Log;import android.view.View;public class ScreenShot {    // 擷取指定Activity的截屏，儲存到png檔案    static Bitmap takeScreenShot(Activity activity) {        Log.i("TAG","tackScreenShot");        // View是你須要的View        View view = activity.getWindow().getDecorView();        view.setDrawingCacheEnabled(true);        view.buildDrawingCache();        Bitmap b1 = view.getDrawingCache();        // 擷取狀況欄高度        Rect frame = new Rect();        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);        int statusBarHeight = frame.top;        Log.i("TAG", "statusBarHeight = " + statusBarHeight);        // 擷取螢幕長和高        int width = activity.getWindowManager().getDefaultDisplay().getWidth();        int height = activity.getWindowManager().getDefaultDisplay()                .getHeight();        // 去掉題目欄        // Bitmap b = Bitmap.createBitmap(b1, 0, 25, 320, 455);        Bitmap b = Bitmap.createBitmap(b1, 0, statusBarHeight, width, height                - statusBarHeight);        view.destroyDrawingCache();        return b;    }    // 儲存到sdcard    private static void savePic(Bitmap b, String strFileName) {        FileOutputStream fos = null;        try {            Log.i("TAG","start savePic");            fos = new FileOutputStream(strFileName);            Log.i("TAG","strFileName = " + strFileName);            if (null != fos) {                b.compress(Bitmap.CompressFormat.PNG, 90, fos);                fos.flush();                fos.close();                Log.i("TAG","save pic");            }        } catch (FileNotFoundException e) {            e.printStackTrace();        } catch (IOException e) {            e.printStackTrace();        }    }    public static void shoot(Activity a,String b) {        //ScreenShot.savePic(ScreenShot.takeScreenShot(a), "sdcard/xx.png");        Log.i("TAG","shot");        Bitmap bitmap = ScreenShot.takeScreenShot(a);        ScreenShot.savePic(bitmap, b);    }}

 

動態

View Code

    public Bitmap createVideoThumbnail(String filePath) {        Bitmap bitmap = null;        android.media.MediaMetadataRetriever retriever = new android.media.MediaMetadataRetriever();        try {// MODE_CAPTURE_FRAME_ONLY//            retriever//                    .setMode(android.media.MediaMetadataRetriever.MODE_CAPTURE_FRAME_ONLY);//            retriever.setMode(MediaMetadataRetriever.MODE_CAPTURE_FRAME_ONLY);            retriever.setDataSource(filePath);//            bitmap = retriever.captureFrame();            String timeString = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);            long time = Long.parseLong(timeString) * 1000;            Log.i("TAG","time = " + time);            bitmap = retriever.getFrameAtTime(time*31/160); //按視頻長度比例選擇幀        } catch (IllegalArgumentException ex) {            // Assume this is a corrupt video file        } catch (RuntimeException ex) {            // Assume this is a corrupt video file.        } finally {            try {                retriever.release();            } catch (RuntimeException ex) {                // Ignore failures while cleaning up.            }        }        return bitmap;    }