Question

我正在调用FirstActivity对SecondActivity的意图。我使用requestCode和Intent调用startActivityForResult，但在SecondActivity中，setResult调用SecondActivity而不是调用FistActivity。这是我的代码

FirstActivity

Intent i = new Intent(getApplicationContext(), SecondActivity.class);                         
startActivityForResult(i,1);

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
Toast.makeText(getApplicationContext(),"result"+data.getStringExtra("data"),Toast.LENGTH_SHORT).show();
}

SecondActivity

Intent i=getIntent();
i.putExtra("data","hi");
setResult(1,i);
finish();

清单

<activity
 android:name=".FirstActivity"
 android:windowSoftInputMode="adjustPan|stateAlwaysHidden"
 android:theme="@style/MyMaterialTheme"

 android:screenOrientation="portrait">
<intent-filter>
    <data android:scheme="example"/>
    <action android:name="android.intent.action.VIEW"/>
    <category android:name="android.intent.category.DEFAULT"/>
    <category android:name="android.intent.category.BROWSABLE"/>
</intent-filter>
</activity>
<activity
    android:name=".SecondActivity"
    android:theme="@style/MyMaterialTheme"
    android:windowSoftInputMode="adjustPan|stateAlwaysHidden"
    android:screenOrientation="portrait">
</activity>

Answer 1

更改自：

Intent i=getIntent();

为：

Intent i=new Intent();// change this line

Answer 2

传递

setResult(Activity.RESULT_OK, i);

而不是

setResult(1,i);

Answer 3

你必须通过拥有一个新的意图目标并最后完成当前活动来实现它。

Intent resultIntent = new Intent();
resultIntent.putExtra("data","hi");
setResult(Activity.RESULT_OK, resultIntent);
finish();

希望这有帮助！

setResult调用相同的活动而不是调用父活动

3 个答案: