小编cph*_*s76的帖子

基本上我是为Android 4.4.2锁屏背景添加一个壁纸选择器,当图像设置后我关闭屏幕然后重新开启以查看锁屏我的屏幕变黑并且logcat给我一个内存不足分配错误.到目前为止,我已经尝试使用Bitmap decodeFile(String pathName),我也重新使用Bitmap decodeFile(String pathName,Options opts),但结果是每次都相同...

以下是用于设置图像的原始方法:

private static final String WALLPAPER_IMAGE_PATH =
        "/data/data/com.android.settings/files/lockscreen_wallpaper.png";

private KeyguardUpdateMonitorCallback mBackgroundChanger = new KeyguardUpdateMonitorCallback() {
    @Override
    public void onSetBackground(Bitmap bmp) {
        if (bmp != null) {
            mKeyguardHost.setCustomBackground(
                    new BitmapDrawable(mContext.getResources(), bmp));
        }
        else {
            File file = new File(WALLPAPER_IMAGE_PATH);
            if (file.exists()) {
                mKeyguardHost.setCustomBackground(
                        new BitmapDrawable(mContext.getResources(), WALLPAPER_IMAGE_PATH));
            }
            else {
                mKeyguardHost.setCustomBackground(null);
            }
        }
        updateShowWallpaper(bmp == null);
    }
};

这是从案例1中调用的:

    public void setCustomBackground(Drawable d) {
        if (!mAudioManager.isMusicActive()) { 

            int mBackgroundStyle = Settings.System.getInt(mContext.getContentResolver(),
                    Settings.System.LOCKSCREEN_BACKGROUND_STYLE, 2);
            int mBackgroundColor …