title: 动态更改桌面app图标
date: 2016-12-13 10:33:27
tags: Utils

• 清单中<application>里的设置

  <activity android:name=".MainActivity">
              <intent-filter>
                  <action android:name="android.intent.action.MAIN"/>
              </intent-filter>
   </activity>
   <activity-alias
              android:name=".maoyu"
              android:enabled="false"
              android:icon="@mipmap/maoyu"
              android:label="maoyu"
              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:name=".uu"
              android:enabled="true"
              android:icon="@mipmap/uu"
              android:label="uu"
              android:targetActivity=".MainActivity">
              <intent-filter>
                  <action android:name="android.intent.action.MAIN"/>
                  <category android:name="android.intent.category.LAUNCHER"/>
              </intent-filter>
    </activity-alias>
  

  将原先的activity标签下的<category android:name="android.intent.category.LAUNCHER"/>删掉

  添加`<activity-alias>标签

  android:name=".uu" 随便起的名字

  android:enabled="true" true表示默认就使用这个，桌面图标就是这个，应用名就是上面那个name

  android:icon="@mipmap/uu" 下面两个不用解释了

  android:targetActivity=".MainActivity">

  上代码

  private void switchIcon(boolean isUU) {
          try {
              //要跟manifest的activity-alias 的name保持一致  
              String maoyu = "com.aidebar.demo.maoyu";
              String uu = "com.aidebar.demo.uu";
  
              PackageManager pm = getPackageManager();
              ComponentName uuComponentName = new ComponentName(getApplicationContext(), uu);
              int uuState = isUU ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
                      : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
              //如果是UU，那么设置成enabled
              if (pm.getComponentEnabledSetting(uuComponentName) != uuState) {
                  pm.setComponentEnabledSetting(uuComponentName, uuState,        PackageManager.DONT_KILL_APP);
              }
              
              ComponentName maoyuComponentName = new ComponentName(getApplicationContext(), maoyu);
              //如果是UU，其他的都要设为disabled
              int maoyuState = !isUU ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
                      : PackageManager.COMPONENT_ENABLED_STATE_DISABLED;
              if (pm.getComponentEnabledSetting(maoyuComponentName) != maoyuState) {//新状态跟当前状态不一样才执行  
                  pm.setComponentEnabledSetting(maoyuComponentName, maoyuState, PackageManager.DONT_KILL_APP);
              }
          } catch (Exception e){
          }
      }
  

  可以在每次打开的时候判断下日期，如果是双十二啦，圣诞啦，就可以调用这方法，来改变应用图标啦，但是要注意试了几个测试机，都要十来秒才会有变化，在这十秒内点击桌面图标会出现该应用未正确安装的提示