6

我正在尝试使用 intent.ACTION_PICK 打开图像，但是当我使用 startActivityForResoult 启动活动时，我的应用程序崩溃了。我做错了什么的任何线索？ 

    public void button_load_image(View view) {
    String path = Environment.getExternalStorageDirectory()
            .getAbsolutePath() + "/" + SimpleCamera.getAlbumName();
    File f = new File(path);

    if (f.exists()) {
        Log.d("button_load_image", "folder exists");
        if (f.isDirectory()) {
            Log.d("button_load_image", "is directory");
            Uri u = Uri.fromFile(f);
            Intent intent = new Intent(Intent.ACTION_PICK, u);
            Log.d("Intent.ACTION_PICK", "IS CREATED");              
            startActivityForResult(intent, REQUEST_CODE_LOAD_IMAGE);                
        }
    }
}

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    switch (requestCode) {
    case REQUEST_CODE_LOAD_IMAGE:
        if (resultCode == RESULT_OK) {
            Uri imageUri= data.getData();
            Log.d("image selected path", imageUri.getPath());
        }
        break;
    }
}

日志显示：

08-13 17:11:37.594: D/libEGL(3265): loaded /vendor/lib/egl/libEGL_POWERVR_SGX540_120.so
08-13 17:11:37.594: D/libEGL(3265): loaded /vendor/lib/egl/libGLESv1_CM_POWERVR_SGX540_120.so
08-13 17:11:37.602: D/libEGL(3265): loaded /vendor/lib/egl/libGLESv2_POWERVR_SGX540_120.so
08-13 17:11:37.664: D/OpenGLRenderer(3265): Enabling debug mode 0
08-13 17:11:46.672: D/album != null(3265): /storage/emulated/0
08-13 17:11:49.914: D/button_load_image(3265): folder exists
08-13 17:11:49.914: D/button_load_image(3265): is directory
08-13 17:11:49.914: D/Intent.ACTION_PICK(3265): IS CREATED
08-13 17:11:49.922: D/AndroidRuntime(3265): Shutting down VM
08-13 17:11:49.922: W/dalvikvm(3265): threadid=1: thread exiting with uncaught exception (group=0x413b0930)
08-13 17:11:49.930: E/AndroidRuntime(3265): FATAL EXCEPTION: main
08-13 17:11:49.930: E/AndroidRuntime(3265): java.lang.IllegalStateException: Could not execute method of the activity
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.view.View$1.onClick(View.java:3597)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.view.View.performClick(View.java:4202)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.view.View$PerformClick.run(View.java:17340)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.os.Handler.handleCallback(Handler.java:725)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.os.Handler.dispatchMessage(Handler.java:92)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.os.Looper.loop(Looper.java:137)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.app.ActivityThread.main(ActivityThread.java:5039)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at java.lang.reflect.Method.invokeNative(Native Method)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at java.lang.reflect.Method.invoke(Method.java:511)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at dalvik.system.NativeStart.main(Native Method)
08-13 17:11:49.930: E/AndroidRuntime(3265): Caused by: java.lang.reflect.InvocationTargetException
08-13 17:11:49.930: E/AndroidRuntime(3265):     at java.lang.reflect.Method.invokeNative(Native Method)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at java.lang.reflect.Method.invoke(Method.java:511)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.view.View$1.onClick(View.java:3592)
08-13 17:11:49.930: E/AndroidRuntime(3265):     ... 11 more
08-13 17:11:49.930: E/AndroidRuntime(3265): Caused by: android.content.ActivityNotFoundException: No Activity found to handle Intent { act=android.intent.action.PICK dat=file:///storage/emulated/0/simple_pic }
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1622)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1417)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.app.Activity.startActivityForResult(Activity.java:3370)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at android.app.Activity.startActivityForResult(Activity.java:3331)
08-13 17:11:49.930: E/AndroidRuntime(3265):     at com.example.mc.MC_Memu.button_load_image(MC_Memu.java:53)
08-13 17:11:49.930: E/AndroidRuntime(3265):     ... 14 more
4

2 回答 2

6

ACTION_PICK 是允许用户从任何已安装的应用程序中选择一个图像，这些应用程序注册了这样的操作。无法指定从哪个相册中选择。用户可以自行决定使用哪个应用程序并浏览到所需的相册以选择照片。

所以取出文件夹参数，你可以试试这个：

Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(intent, REQUEST_CODE_LOAD_IMAGE);

在 onActivityResult 中，除了 RESULT_OK 之外，您还应该检查 data.getData() != null，因为应用程序可以正确关闭（而不是取消）而根本不返回图像。

于 2013-08-13T22:42:49.753 回答
0 
public class MainActivity extends AppCompatActivity {
ImageView imageView;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    imageView= findViewById(R.id.image);
}

public void openImage(View view) {
    Intent intent= new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI);
    startActivityForResult(intent,100);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if(requestCode==100&&resultCode==RESULT_OK){
        Uri uri=data.getData();
        imageView.setImageURI(uri);
    }
}

}

于 2018-07-24T21:25:09.920 回答