3

谢谢你的时间。我正在做一个应用程序,我从中启动图库,活动 A 选择一个图像并返回到同一个活动 A。

我从具有单个活动(在清单上定义为启动器)的项目中没有问题,但是当我从清单上默认定义的活动的整个项目中执行此操作时,它无法正常工作。

我用来打开图库并选择照片的意图:

public void openGallery(int req_code){

   Intent intent = new Intent();
   intent.setType("image/*");
   intent.setAction(Intent.ACTION_GET_CONTENT);
   startActivityForResult(Intent.createChooser(intent,"Select file to upload "), req_code);
}

我获取数据的 onActivityResult (当我从洞项目执行时从未调用过):

public void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (resultCode == RESULT_OK) {
        Uri selectedImageUri = data.getData();
        if (requestCode == SELECT_FILE1)
        {
            selectedPath1 = getPath(selectedImageUri);
            System.out.println("selectedPath1 : " + selectedPath1);
        }
        if (requestCode == SELECT_FILE2)
        {
            selectedPath2 = getPath(selectedImageUri);
            System.out.println("selectedPath2 : " + selectedPath2);
        }
        tv.setText("Selected File paths : " + selectedPath1 + "," + selectedPath2);
    }
}

这是 logcat 转储:

01-05 15:18:14.569: I/ActivityManager(59): Starting activity: Intent {   act=android.intent.action.UPLOADIMAGEDEMO cmp=com.example/.UploadImageDemo }
01-05 15:18:15.779: D/dalvikvm(2496): GC_EXTERNAL_ALLOC freed 2697 objects / 189152 bytes in 92ms
01-05 15:18:16.599: I/ActivityManager(59): Displayed activity com.example/.UploadImageDemo: 1953  ms (total 1953 ms)
01-05 15:18:21.899: D/dalvikvm(279): GC_EXPLICIT freed 871 objects / 134112 bytes in 217ms
01-05 15:18:26.620: I/ActivityManager(59): Starting activity: Intent {  act=android.intent.action.CHOOSER cmp=android/com.android.internal.app.ChooserActivity (has extras) }
01-05 15:18:28.250: I/ActivityManager(59): Starting activity: Intent {  act=android.intent.action.GET_CONTENT typ=image/* flg=0x3000000  cmp=com.android.gallery/com.android.camera.ImageGallery }
01-05 15:18:28.670: D/dalvikvm(279): GC_EXTERNAL_ALLOC freed 388 objects / 53352 bytes in 60ms
01-05 15:18:28.850: D/dalvikvm(279): GC_EXTERNAL_ALLOC freed 326 objects / 90664 bytes in 53ms
01-05 15:18:29.200: I/ActivityManager(59): Displayed activity    com.android.gallery/com.android.camera.ImageGallery: 873 ms (total 2345 ms)
01-05 15:18:29.420: D/dalvikvm(279): GC_EXTERNAL_ALLOC freed 725 objects / 106960 bytes in 140ms
01-05 15:18:30.430: W/InputManagerService(59): Starting input on non-focused client         com.android.internal.view.IInputMethodClient$Stub$Proxy@45020da8 (uid=10002 pid=279)
01-05 15:18:32.010: D/dalvikvm(112): GC_FOR_MALLOC freed 9994 objects / 476368 bytes in 149ms

最后,我首先从整个项目(退出应用程序)中记录了模拟器的行为,然后从运行良好的分离项目中记录了模拟器的行为。

http://www.youtube.com/watch?v=SntnyKiJQ1Q&feature=youtu.be

非常感谢!!!

4

3 回答 3

2

尝试更改活动清单:

android:noHistory="false"

于 2017-05-24T16:37:19.097 回答
0

我有工作代码,它使用以下代码启动图库以选择图像:

static final int GALLERY_RESULT = 1;

Intent j = new Intent(Intent.ACTION_PICK, Images.Media.EXTERNAL_CONTENT_URI);
j.setType("image/*");
startActivityForResult(j, GALLERY_RESULT);

我处理结果如下:

protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
    super.onActivityResult(requestCode, resultCode, intent);
    if (resultCode == RESULT_OK) {
        switch (requestCode) {
            case GALLERY_RESULT:
                Uri imgUri = intent.getData();
                imgView.setImageURI(imgUri);
            break;
        }
    }
}
于 2013-01-05T18:45:42.940 回答
0

从清单文件中删除 android:noHistory="true" 属性,如下所示:

 <activity
        android:name=".YourActivity"
        android:noHistory="true"   <-------------------Remvoe this line
        android:theme="@style/AppTheme"/>

现在原始代码将是这样的:

 <activity
        android:name=".YourActivity"
        android:theme="@style/AppTheme"/>

现在,它将完美运行。享受。

于 2020-12-16T12:51:05.233 回答