android关于动态的切换app图标问题

小鱼儿 2023-01-17 13:56 120阅读 0赞

先讨论实现步骤:  
1.在AndroidManifest.xml里添加 标签,并且 启动页 的标签要先去掉,在它所属的每个 里加上 就好了

<activity android:name=".advert.activity.SplashActivity">
            </activity>
            <activity-alias
                android:name=".appIcon1"
                android:enabled="true"
                android:label="美女那些图"
                android:icon="@drawable/app_background"
                android:targetActivity=".advert.activity.SplashActivity">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity-alias>
    
            <activity-alias
                android:name=".appIcon2"
                android:enabled="false"
                android:icon="@drawable/map_icon"
                android:label="地图"
                android:targetActivity=".advert.activity.SplashActivity">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity-alias>
    
            <activity-alias
                android:name=".appIcon3"
                android:enabled="false"
                android:icon="@drawable/new_mail_icon"
                android:label="邮件"
                android:targetActivity=".advert.activity.SplashActivity">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity-alias>

2.在换图标的activity里:

//在onCreat()方法里:

cl_defaultIcon = findViewById(R.id.cl_defaultIcon);
        cl_defaultIcon.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
    
                switchIcon(1);
            }
        });
    
        cl_mapIcon = findViewById(R.id.cl_mapIcon);
        cl_mapIcon.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                switchIcon(2);
            }
        });
        cl_mailIcon = findViewById(R.id.cl_mailIcon);
        cl_mailIcon.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                switchIcon(3);
            }
        });

private void switchIcon(int useCode) {
            try {
                //要跟manifest的activity-alias 的name保持一致
                String icon_tag_default = getPackageName() + ".appIcon1";
                String icon_tag_map = getPackageName() + ".appIcon2";
                String icon_tag_mail = getPackageName() + ".appIcon3";
                
                if (useCode != 11) {
                    PackageManager pm = getPackageManager();
                    ComponentName defaultComponentName = new ComponentName(this, icon_tag_default);
    
                    int defaultState = useCode == 1 ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
                            : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
                    if (pm.getComponentEnabledSetting(defaultComponentName) != defaultState) {
    
                        //正常图标新状态
    //                    new Handler().postDelayed(new Runnable() {
    //                        @Override
    //                        public void run() {
    //                            showAuditDialog();
    //                        }
    //                    }, 3000);
                        //新状态跟当前状态不一样才执行
                        pm.setComponentEnabledSetting(
                                defaultComponentName,
                                defaultState,
                                PackageManager.DONT_KILL_APP);
    
                        Toast.makeText(getBaseContext(), "正在生成桌面图标,预计三秒种生效", Toast.LENGTH_SHORT).show();
                    } else {
                        if (useCode == 1) {
                            Toast.makeText(getBaseContext(), "选择的样式和当前版本一样", Toast.LENGTH_SHORT).show();
                            Log.e(TAG,"和当前版本一样1");
                        }
    
                    }
    
                    //2.地图
                    ComponentName actComponentMap = new ComponentName(this, icon_tag_map);
                    //正常图标新状态
                    int actMapState = useCode == 2 ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
                            : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
                    if (pm.getComponentEnabledSetting(actComponentMap) != actMapState) {
                        //PackageManager.DONT_KILL_APP表示执行此方法时不杀死当前的APP进程
                        pm.setComponentEnabledSetting(
                                actComponentMap,
                                actMapState,
                                PackageManager.DONT_KILL_APP);
                        Toast.makeText(getBaseContext(), "正在生成桌面图标,预计三秒种生效", Toast.LENGTH_SHORT).show();
                    } else {
                        if (useCode == 2) {
                            Toast.makeText(getBaseContext(), "选择的样式和当前版本一样", Toast.LENGTH_SHORT).show();
                            Log.e(TAG,"和当前版本一样2");
                        }
                    }
    
                    //3.邮件
                    ComponentName actComponentMail = new ComponentName(this, icon_tag_mail);
                    //正常图标新状态
                    int actMailState = useCode == 3 ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
                            : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
                    if (pm.getComponentEnabledSetting(actComponentMail) != actMailState) {
    
                        pm.setComponentEnabledSetting(
                                actComponentMail,
                                actMailState,
                                PackageManager.DONT_KILL_APP);
                        Toast.makeText(getBaseContext(), "正在生成桌面图标,预计三秒种生效", Toast.LENGTH_SHORT).show();
                    } else {
                        if (useCode == 3) {
                            Toast.makeText(getBaseContext(), "选择的样式和当前版本一样", Toast.LENGTH_SHORT).show();
                            Log.e(TAG,"和当前版本一样3");
                        }
                    }
                }
            } catch (Exception e) {
            }
        }

以上基本是实现app图标换肤所需的代码

关于可能会遇到的闪退问题  
**一定要用这个PackageManager.DONT\_KILL\_APP**,网上有些是PackageManager.其它的…PackageManager.DONT\_KILL\_APP和PackageManager.SYNCHRONOUS的区别使用可以了解;  
**PackageManager.DONT\_KILL\_APP表示执行此方法时不杀死当前的APP进程**

**用这个换图标会退出到桌面，然后生成新的图标,这是效果,**  
我优化之处:如果切换的图标是存在的图标,会有Toas提示,大家要想加个DIaLog自定义弹窗提示,就写个方法在if里面展示下就好了  
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