電話不是在我的android應用程序中發生？

Question

從應用程序調用時，它不起作用。我已經在Android清單中添加了權限，但它仍然無法工作。請看我的代碼，並儘快幫助我。

button.setOnClickListener(new View.OnClickListener() { 
    @Override 
    public void onClick(View v) { 
     Intent callIntent = new Intent(Intent.ACTION_CALL); 
     callIntent.setData(Uri.parse("tel:999999999")); 

     if (ActivityCompat.checkSelfPermission(menu.this, 
       Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) { 
      return; 
     } 

     startActivity(callIntent); 
    } 
}); 

Answer 1

此代碼應工作：

Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + "Your Phone_number")); 
    startActivity(intent); 

權限在清單：

<uses-permission android:name="android.permission.CALL_PHONE" /> 

，但我強烈建議你使用ACTION_DIAL代替。它用輸入的號碼打開撥號器屏幕。這給用戶更大的靈活性。你也不需要擁有這個CALL_PHONE權限。

這裏有一個更新：

隨着CALL_PHONE許可

主類

public class MainActivity extends AppCompatActivity { 

private final int CALL_PHONE = 1; 
private Button dialBtn; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    dialBtn = (Button) findViewById(R.id.dial_button); 
    //In android 6 we need to ask for permissions: 
    if (ActivityCompat.checkSelfPermission(getApplicationContext(), 
      Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) { 
     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { 
      requestPermissions(new String[]{Manifest.permission.CALL_PHONE}, CALL_PHONE); 
     } else { 
      Toast.makeText(getApplicationContext(), "We need permissions to dial.", Toast.LENGTH_LONG).show(); 
     } 
    } else { 
     setupView(); 
    } 
} 

private void setupView() { 
    dialBtn.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      Intent callIntent = new Intent(Intent.ACTION_CALL); 
      callIntent.setData(Uri.parse("tel:999999999")); 
      // We have to implement this part because ... yeah permissions in android..... 
      if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.CALL_PHONE) != PackageManager.PERMISSION_GRANTED) { 
       Toast.makeText(getApplicationContext(), "We need permissions to dial.", Toast.LENGTH_LONG).show(); 
       return; 
      } 
      startActivity(callIntent); 
     } 
    }); 
} 

@Override 
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) { 
    switch (requestCode) { 
     case CALL_PHONE: 
      if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) { 
       setupView(); 
      } else { 
       Toast.makeText(getApplicationContext(), "We need permissions to dial.", Toast.LENGTH_LONG).show(); 
      } 
      break; 
    } 
} 

我的清單：

<uses-permission android:name="android.permission.CALL_PHONE"/> 

<application 
    android:allowBackup="true" 
    android:icon="@mipmap/ic_launcher" 
    android:label="@string/app_name" 
    android:supportsRtl="true" 
    android:theme="@style/AppTheme"> 
    <activity android:name=".MainActivity"> 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
</application> 

沒有權限檢查，只有使用ACTION_DIAL

public class MainActivity extends AppCompatActivity { 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    Button dialBtn = (Button) findViewById(R.id.dial_button); 
    dialBtn.setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View view) { 
      Intent callIntent = new Intent(Intent.ACTION_DIAL); 
      callIntent.setData(Uri.parse("tel:999999999")); 
      startActivity(callIntent); 
     } 
    }); 
} 
} 

最後一個是容易得多。 Android權限檢查是一個痛苦的屁股。

我剛做了我自己的課。下次更容易提供錯誤堆棧跟蹤。但對於我在代碼中可以看到的是您使用menu.this我不知道，因爲您沒有提供足夠的信息，但我認爲這會導致錯誤。

我希望我幫助你。