assets目录图片查看器

public class ImagActivity extends Activity {

    AssetManager assetManager=null;
    String []dec;
    int currentImg=0;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_imag);
        final Button button=(Button)findViewById(R.id.imagButton);
        final ImageView imgBig=(ImageView)findViewById(R.id.imgBig);
       

        try
        {
            assetManager=getAssets();
            dec=assetManager.list("");


        }catch (IOException e){
            e.printStackTrace();
        }
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                InputStream inputStream=null;
                currentImg=(++currentImg)%dec.length;
                while(!dec[currentImg].endsWith(".jpg")) {
                    currentImg=(++currentImg)%dec.length;
                }
                try{
                    inputStream=assetManager.open(dec[currentImg]);

                }catch (IOException e){
                    e.printStackTrace();
                }
                BitmapDrawable ibitmapDrawable=(BitmapDrawable)imgBig.getDrawable();

                if(ibitmapDrawable!=null&&!bitmapDrawablep.getBitmap().isRecycled()) {
                    Bitmap bitmapTmp=ibitmapDrawable.getBitmap();
                   // bitmapTmp.recycle();
                    bitmapTmp=null;
                }
                imgBig.setImageBitmap(BitmapFactory.decodeStream(inputStream));

                if(inputStream!=null){
                    try{
                        inputStream.close();
                    }catch (IOException e){
                        e.printStackTrace();
                    }
                }
            }
        });
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

    }
}

版权声明：本文为博主原创文章，未经博主允许不得转载。