/**
* TODO 保存图片至sd卡
*
* @param fileName 文件名
* @param bitmap
*/
public static synchronized void saveToSD(final String fileName, final Bitmap bitmap) {
if (bitmap == null || fileName == null) {
return;
}
Runnable runnable =
new Runnable() {
public void run() {
FileOutputStream b = null;
try {
b = new FileOutputStream(fileName);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, b); // 把数据写入文件
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
b.flush();
b.close();
} catch (Exception e) {
e.printStackTrace();
}
}
};
};
ThreadPoolManager.getInstance().addTask(runnable);
}
/**
* 方法描述：新:从本地或者服务端加载图片
*
* @param context 上下文
* @param imageLocalPath 本地路径
* @param imagePath 网络图片url
* @param callback 图片回调
* @param isCompress 是否要压缩
* @return Bitmap对象
*/
private static Bitmap loadImage(
final Context context,
final String imageLocalPath,
final String imagePath,
final ImageCallback callback,
final boolean isCompress) {
Bitmap bitmap = null;
if (imageLocalPath != null) // 从内存中高速加载
bitmap = getBitmapFromCache(imageLocalPath);
if (bitmap != null) {
return bitmap;
} else { // 从网上或本地缓存中加载
final Handler handler =
new Handler() {
@Override
public void handleMessage(Message msg) {
if (msg.obj != null) {
Bitmap bitmap = (Bitmap) msg.obj;
if (callback != null) {
callback.loadImage(bitmap, imageLocalPath);
}
}
}
};
Runnable runnable =
new Runnable() {
@Override
public void run() {
try {
Message msg = handler.obtainMessage();
// 检查本地缓存是否存在
File imageFile = new File(imageLocalPath);
if (imageFile.exists()) {
LogUtils.d("图片本地缓存加载url=:" + imageLocalPath);
// 从本地缓存中获取图片并存入常用集合中
putImageToMap(imageLocalPath, isCompress);
msg.obj = getBitmapFromCache(imageLocalPath);
if (msg.obj != null) {
handler.sendMessage(msg);
}
} else { // 不存在则从网络获取
if (imagePath != null) {
Bitmap bitmap = null;
SharedPreferences sp =
context.getSharedPreferences("config", Context.MODE_PRIVATE);
// 仅在wifi下加载
if (sp.getBoolean("isWifiLoad", false)) {
if (!NetUtil.isWifi(context)) {
return;
}
}
URL url = new URL(imagePath);
LogUtils.d("图片从服务器加载url=:" + imagePath);
URLConnection conn = null;
conn = url.openConnection();
conn.setConnectTimeout(5000);
conn.setReadTimeout(5000);
conn.connect();
BufferedInputStream bis = new BufferedInputStream(conn.getInputStream(), 8192);
if (bis != null) {
bitmap = BitmapFactory.decodeStream(bis);
}
msg.what = 0;
putBitmapToMap(imageLocalPath, bitmap);
msg.obj = getBitmapFromCache(imageLocalPath);
if (msg.obj != null) {
handler.sendMessage(msg);
}
try {
// 保存文件到sd卡
saveToSD(imageLocalPath, bitmap);
} catch (Exception e) {
e.printStackTrace();
Log.e(ImageUtil.class.getName(), "保存图片至SD卡出错！");
}
}
}
} catch (Exception e) {
Log.e(ImageUtil.class.getName(), "网络请求图片出错！");
e.printStackTrace();
}
}
};
// 执行线程
ThreadPoolManager.getInstance().addTask(runnable);
}
return null;
}