<application>
下,主要的 <activity>
不应包含 intent-filter
,且 android:exported
应设置为 true
。这将使 MainActivity
始终可用而不显示快捷方式图标。<activity
android:name=".MainActivity"
android:label="Test App"
android:configChanges="keyboard|keyboardHidden|orientation|screenSize|uiMode"
android:launchMode="singleTask"
android:windowSoftInputMode="adjustResize"
android:exported="true"
>
</activity>
3.现在,对于您想要显示的每个图标,请创建<activity-alias>
。将android:enabled
设置为true
以使用默认图标。 所有已启用的图标都将显示在桌面上。因此,请确保只启用一个活动别名。
<activity-alias
android:label="Test App :: Default"
android:icon="@mipmap/icon1"
android:name="First"
android:enabled="true"
android:targetActivity=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity-alias>
<activity-alias
android:label="Test App :: Special"
android:icon="@mipmap/icon2"
android:name="Second"
android:enabled="false"
android:targetActivity=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity-alias>
<activity-alias
android:label="Test App :: Very Special"
android:icon="@mipmap/icon3"
android:name="Third"
android:enabled="false"
android:targetActivity=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity-alias>
4. 创建Java类
为您的每个活动别名创建一个空类。
package com.your.package;
class First {
}
5. 创建 IconChanger 类
@ReactMethod
允许从 React Native 访问该类。你可以将 com.your.package
替换为 BuildConfig.APPLICATION_ID
,以避免多次编写包名。
package your.package.name;
import android.os.Bundle;
import com.facebook.react.ReactActivity;
import com.facebook.react.bridge.NativeModule;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.bridge.ReactContext;
import com.facebook.react.bridge.ReactContextBaseJavaModule;
import com.facebook.react.bridge.ReactMethod;
import java.util.Map;
import java.util.HashMap;
import android.content.pm.PackageManager;
import android.content.ComponentName;
import com.facebook.react.bridge.Promise;
import android.os.Bundle;
import android.widget.Toast;
public class IconChanger extends ReactContextBaseJavaModule {
private final ReactApplicationContext reactContext;
public IconChanger(ReactApplicationContext reactContext) {
super(reactContext);
this.reactContext = reactContext;
}
@Override
public String getName() {
return "IconChanger";
}
@ReactMethod
public void changeIcon(String enableIntent, String disableIntent, Promise response) {
try {
PackageManager packageManager = this.reactContext.getPackageManager();
int action;
String activeIntent="com.your.package."+enableIntent;
Toast.makeText( this.reactContext,"Enabling "+enableIntent,Toast.LENGTH_SHORT).show();
packageManager.setComponentEnabledSetting(
new ComponentName("com.your.package", activeIntent),
PackageManager.COMPONENT_ENABLED_STATE_ENABLED,
PackageManager.DONT_KILL_APP
);
if(!disableIntent.equals(null) && !disableIntent.equals(enableIntent)){
activeIntent="com.your.package.."+disableIntent;
Toast.makeText( this.reactContext,"Disabling "+disableIntent,Toast.LENGTH_SHORT).show();
packageManager.setComponentEnabledSetting(
new ComponentName("com.your.package.", activeIntent),
PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP
);
}
response.resolve(enableIntent);
} catch (Exception e) {
response.reject("Error", e);
}
}
}
6. 将其注册为 NativeModule
创建 CustomPackages.java
文件
package com.your.package;
import com.facebook.react.ReactPackage;
import com.facebook.react.bridge.NativeModule;
import com.facebook.react.bridge.ReactApplicationContext;
import com.facebook.react.uimanager.ViewManager;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class CustomPackages implements ReactPackage {
@Override
public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
return Collections.emptyList();
}
@Override
public List<NativeModule> createNativeModules(
ReactApplicationContext reactContext) {
List<NativeModule> modules = new ArrayList<>();
modules.add(new IconChanger(reactContext));
return modules;
}
}
7. 现在将此包添加到您的MainApplication.java
文件中
@Override
protected List<ReactPackage> getPackages() {
@SuppressWarnings("UnnecessaryLocalVariable")
List<ReactPackage> packages = new PackageList(this).getPackages();
packages.add(new CustomPackages());
return packages;
}
8. 从 react-native
中访问 IconChanger
import { NativeModules } from 'react-native';
const { IconChanger } = NativeModules;
IconChanger.changeIcon(newIcon, oldIcon);
[注意事项]
这将启用新的活动,然后关闭旧的活动。
在应用程序关闭或后台运行时更改图标,因为更改活动会关闭应用程序。