protected Options getOptions(Context context) {
Options options = new Options();
options.inDensity = 330;
options.inTargetDensity =
(int) (context.getResources().getDisplayMetrics().density * ((float) options.inDensity));
return options;
}
/**
* @param data 数据或路径
* @param width 目标宽
* @param height 目标高
* @return 图片
*/
private Bitmap createBitmap(Object data, int width, int height) {
Options options = new Options();
int scale = 1;
if (width > 0 && height > 0) { // 创建目标大小的图片
options.inJustDecodeBounds = true;
if (data instanceof String) {
BitmapFactory.decodeFile((String) data, options);
} else {
BitmapFactory.decodeByteArray((byte[]) data, 0, ((byte[]) data).length, options);
}
int dw = options.outWidth / width;
int dh = options.outHeight / height;
scale = Math.max(dw, dh);
options = new Options();
}
options.inDensity = DeviceInfo.getInstance().getDencity();
options.inScaled = true;
options.inPurgeable = true;
options.inSampleSize = scale;
Bitmap bitmap = null;
if (data instanceof String) {
bitmap = BitmapFactory.decodeFile((String) data, options);
} else {
bitmap = BitmapFactory.decodeByteArray((byte[]) data, 0, ((byte[]) data).length, options);
}
return bitmap;
}
private void copyOptions(Options srcOptions, Options destOptions) {
destOptions.inDensity = srcOptions.inDensity;
destOptions.inDither = srcOptions.inDither;
destOptions.inInputShareable = srcOptions.inInputShareable;
destOptions.inJustDecodeBounds = srcOptions.inJustDecodeBounds;
destOptions.inPreferredConfig = srcOptions.inPreferredConfig;
destOptions.inPurgeable = srcOptions.inPurgeable;
destOptions.inSampleSize = srcOptions.inSampleSize;
destOptions.inScaled = srcOptions.inScaled;
destOptions.inScreenDensity = srcOptions.inScreenDensity;
destOptions.inTargetDensity = srcOptions.inTargetDensity;
destOptions.inTempStorage = srcOptions.inTempStorage;
if (Build.VERSION.SDK_INT >= 10) copyOptions10(srcOptions, destOptions);
if (Build.VERSION.SDK_INT >= 11) copyOptions11(srcOptions, destOptions);
}