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view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap bitmap = view.getDrawingCache();
view.destroyDrawingCache();
sample from http://my.oschina.net/u/242041/blog/212755
public void screenShot(View view, String fileName) throws Exception {
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
//上面2行必须加入,如果不加如view.getDrawingCache()返回null
Bitmap bitmap = view.getDrawingCache();
FileOutputStream fos = null;
try {
//判断sd卡是否存在
boolean sdCardExist = Environment.getExternalStorageState()
.equals(android.os.Environment.MEDIA_MOUNTED);
if(sdCardExist){
//获取sdcard的根目录
String sdPath = Environment.getExternalStorageDirectory().getPath();
//创建程序自己创建的文件夹
File tempFile= new File(sdPath+File.separator +fileName);
if(!tempFile.exists()){
tempFile.mkdirs();
}
//创建图片文件
File file = new File(sdPath + File.separator+fileName+File.separator+ "screen" + ".png");
if(!file.exists()){
file.createNewFile();
}
image.setImageBitmap(bitmap);
fos = new FileOutputStream(file);
if (fos != null) {
bitmap.compress(Bitmap.CompressFormat.PNG, 90, fos);
fos.close();
}
}
} catch (Exception e) {
Log.e(TAG, "cause for "+e.getMessage());
}
// view.destroyDrawingCache(); 最后应该还要释放掉。
//
}