假设我有应用程序a和应用程序b。
在应用程序a中,我启动了一个以这种方式启动应用程序b的意图。
Intent intent = new Intent("com.example.myAppBAction");
Bundle bundle = new Bundle();
bundle.putString("anId", id);
intent.putExtras(bundle);
startActivityForResult(intent, myRequestCode);
然后在应用程序b中,我接收所有的数据,并在完成一些工作后以这种方式返回一个结果。
@Override
public void onBackPressed() {
super.onBackPressed();
Intent i = new Intent();
int codeWorkDone;//this is valued between 2 or 3
i.putExtra("FirstResult", anInteger);
i.putExtra("SecondResult", anotherInteger);
setResult(codeWorkDone, i);
finish();
}
最终在我的 onActivityResult
我需要打印应用程序b中的所有附加内容,如下所示:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode){
case myRequestCode:
StringBuilder result = new StringBuilder();
result.append(resultCode + "\n");
if (data != null){
Bundle b = data.getExtras();
if (b != null) {
for (String key : b.keySet()) {
result.append(key + " : " + (b.get(key) != null ? b.get(key) : "NULL"));
}
}
}
Log.d("esito", result.toString());
break;
}
}
这里的问题是 requestCode
是正确的,但我收到一封回信 resultCode
这是0(请记住,从应用程序b设置为2或3之间),我的数据是空的。
有什么线索吗?
编辑:应用程序a清单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.appA"
android:versionCode="202040"
android:versionName="2.2.4" >
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<uses-permission android:name="android.permission.USE_CREDENTIALS" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-feature
android:glEsVersion="0x00020000"
android:required="true" />
<application
android:name=".application.MyAppAApplication"
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar"
>
<activity
android:name=".activity.MainActivity"
android:configChanges="orientation|screenSize"
android:theme="@style/AppTheme.NoActionBar"
android:launchMode="singleTask"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.example.TestActivityToLaunchAppB"
android:label="@string/title_activity"
android:theme="@style/AppTheme.NoActionBar"
android:windowSoftInputMode="stateHidden|adjustPan" >
</activity>
<meta-data
android:name="io.fabric.ApiKey"
android:value="xxx" />
</application>
</manifest>
应用程序b清单:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.myApp.appB">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-feature
android:name="android.hardware.camera"
android:required="true" />
<application
android:name=".MyAppApplication"
android:allowBackup="false"
android:hardwareAccelerated="true"
android:icon="@drawable/xxhdpi"
android:label="@string/app_name"
android:largeHeap="true"
android:roundIcon="@drawable/xxhdpi"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="com.cdd.android.fileprovider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
<activity
android:name=".activity.MyLandingActivity"
android:configChanges="orientation|screenSize"
android:screenOrientation="portrait">
<intent-filter>
<action android:name="com.example.myAppBAction" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
</application>
</manifest>
暂无答案!
目前还没有任何答案,快来回答吧!