棉花糖运行时权限崩溃的应用程序

嗨我一直在创建一个应用程序，使用谷歌地图，一切工作正常，直到我了解到棉花糖需要权限。我一直在阅读它，并且当我点击一个像这样的按钮时，它已经得到它的工作，它崩溃了应用程序。棉花糖运行时权限崩溃的应用程序

@Override 
public void onClick(View v) { 
    view = v; 
    int id = v.getId(); 
    switch (id){ 
     case R.id.check_permission: 
      if (checkPermission()) { 
       Snackbar.make(view,"Permission already granted.",Snackbar.LENGTH_LONG).show(); 
      } else { 
       Snackbar.make(view,"Please request permission.",Snackbar.LENGTH_LONG).show(); 
       requestPermission(); 
      } 
      break; 
    }

但是，当我试图呼吁，要求GPS权限上的活动的开始是这样

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    checkPermission(); 
} 

private boolean checkPermission(){ 
    int result = ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION); 
    if (result == PackageManager.PERMISSION_GRANTED){ 
     return true; 
    } else { 
     requestPermission(); 
     return false; 
    } 
} 

private void requestPermission(){ 
    if (ActivityCompat.shouldShowRequestPermissionRationale(activity,Manifest.permission.ACCESS_FINE_LOCATION)){ 
     Toast.makeText(context,"GPS permission allows us to access location data. Please allow in App Settings for additional functionality.",Toast.LENGTH_LONG).show(); 
    } else { 
     ActivityCompat.requestPermissions(activity,new String[]{Manifest.permission.ACCESS_FINE_LOCATION},PERMISSION_REQUEST_CODE); 
    } 
} 

@Override 
public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) { 
    switch (requestCode) { 
     case PERMISSION_REQUEST_CODE: 
      if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { 
       Snackbar.make(view,"Permission Granted, Now you can access location data.",Snackbar.LENGTH_LONG).show(); 
      } else { 

       Snackbar.make(view,"Permission Denied, You cannot access location data.",Snackbar.LENGTH_LONG).show(); 
      } 
      break; 
    } 
}

功能这是我的logcat：

E/AndroidRuntime: FATAL EXCEPTION: main 
       Process: com.example.gin.runtimepermissions, PID: 9203 
       java.lang.RuntimeException: Failure delivering result ResultInfo{[email protected]:requestPermissions:, request=1, result=-1, data=Intent { act=android.content.pm.action.REQUEST_PERMISSIONS (has extras) }} to activity {com.example.gin.runtimepermissions/com.example.gin.runtimepermissions.MainActivity}: java.lang.IllegalArgumentException: No suitable parent found from the given view. Please provide a valid view. 
        at android.app.ActivityThread.deliverResults(ActivityThread.java:3699) 
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:3742) 
        at android.app.ActivityThread.-wrap16(ActivityThread.java) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:148) 
        at android.app.ActivityThread.main(ActivityThread.java:5417) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
       Caused by: java.lang.IllegalArgumentException: No suitable parent found from the given view. Please provide a valid view. 
        at android.support.design.widget.Snackbar.make(Snackbar.java:137) 
        at com.example.gin.runtimepermissions.MainActivity.onRequestPermissionsResult(MainActivity.java:66) 
        at android.app.Activity.dispatchRequestPermissionsResult(Activity.java:6553) 
        at android.app.Activity.dispatchActivityResult(Activity.java:6432) 
        at android.app.ActivityThread.deliverResults(ActivityThread.java:3695) 
        at android.app.ActivityThread.handleSendResult(ActivityThread.java:3742)  
        at android.app.ActivityThread.-wrap16(ActivityThread.java)  
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1393)  
        at android.os.Handler.dispatchMessage(Handler.java:102)  
        at android.os.Looper.loop(Looper.java:148)  
        at android.app.ActivityThread.main(ActivityThread.java:5417)  
        at java.lang.reflect.Method.invoke(Native Method)  
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

任何人都可以解释为什么它会崩溃吗？在此先感谢：d

来源

2017-05-21 Gionne Lapuz

请编辑您的问题，并显示与崩溃相关的Java堆栈跟踪以及与该崩溃相关的任何代码，这些代码可能不是您的问题。 – CommonsWare

@CommonsWare先生，我添加了我的logcat，我发现这个问题。问题是Snackbar哈哈..当我删除SNACKBARS并用** onRequestPermissionsResult **中的TOAST替换它时，它突然工作了哈哈。 –

Caused by: java.lang.IllegalArgumentException: No suitable parent found from the given view. Please provide a valid view.

据推测，这是从你的两个Snackbar参考之一：

Snackbar.make(view,"Permission Granted, Now you can access location data.",Snackbar.LENGTH_LONG).show();

在这两个，你指的是view场。我不知道你在哪里填充该领域。您需要从您的布局中指定view有效的View，通常通过findViewById()获取。

或者，正如你明显所做的那样，用其他东西替换Snackbar（例如，Toast）。

来源

2017-05-21 18:26:48 CommonsWare

是的，先生，你是对的。感谢您的帮助和解释，先生！ –

 String [] permissions=new String[]{ 
       Manifest.permission.READ_EXTERNAL_STORAGE, 
       Manifest.permission.WRITE_EXTERNAL_STORAGE, 
       Manifest.permission.ACCESS_FINE_LOCATION 
     }; 
     List<String> listPermissionsNeeded = new ArrayList<>(); 
     for (String permission:permissions) { 
      if (ContextCompat.checkSelfPermission(this,permission)!= PackageManager.PERMISSION_GRANTED){ 
       listPermissionsNeeded.add(permission); 
      } 
     } 
     if (!listPermissionsNeeded.isEmpty()) { 
      ActivityCompat.requestPermissions(this, listPermissionsNeeded.toArray(new String[listPermissionsNeeded.size()]), 1); 
     }

来源

2017-05-21 18:11:01

先生，我发现这个问题。问题是Snackbar哈哈..当我在onRequestPermissionsResult中删除SNACKBARS并用TOAST替换它时，它突然工作了哈哈。再次感谢您的帮助先生。你值得赞赏：D –

您可以使用您的XML布局来查看小吃店。当小吃店无法查看其视图时，会发生此问题。所以我们应该告诉它在这个布局中查看你的。它可以是任何布局。例如，我使用线性布局。

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:app="http://schemas.android.com/apk/res-auto" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
android:background="@color/colorWhite" 
android:gravity="center" 
android:id="@+id/ll_container" 
android:orientation="vertical">

使用线性布局的ID，并告诉小吃店，以查看它像下面

LinearLayout mLinearLayoutContainer = v.findViewById(R.id.ll_container) 

Snackbar snackbar = Snackbar 
        .make(mLinearLayoutContainer, "your text here.", Snackbar.LENGTH_LONG) 
        .setActionTextColor(getResources().getColor(R.color.colorWhite)) 
        .setAction(getResources().getString(R.string.label_settings), new View.OnClickListener() { 
         @Override 
         public void onClick(View view) { 
          Intent myIntent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); 
          startActivity(myIntent); 
         } 
        }); 

      View sbView = snackbar.getView(); 
      snackbar.show();

来源

2017-11-07 10:13:02

Snackbar.make(view,"Permission Granted, Now you can access location data.",Snackbar.LENGTH_LONG).show();

而不是使用此尝试使用下面的一个，

Snackbar.make(findViewById(R.id.container_view),"Permission Granted, Now you can access location data.",Snackbar.LENGTH_LONG).show();

它为我工作。

来源

2017-12-22 05:49:19

棉花糖运行时权限崩溃的应用程序

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