Android在一个APP中通过包名或类名启动另一个APP

时间:2022-06-16 16:46:44

调用apk方法一:知道包名类名

  /**
* @exception :启动apk
* @param :String  包名
* @param :String  类名
* **/
public void startActivity(String packageName,String  className){
 
Intent intent = new Intent(Intent.ACTION_MAIN);  
intent.addCategory(Intent.CATEGORY_LAUNCHER);              
ComponentName cn = new ComponentName(packageName, className);              
intent.setComponent(cn);  
startActivity(intent);  
 
}
 

调用apk方法二:只知道知道包名

  /**
* @exception :启动apk
* @param :String  包名
* **/
public void startAPP(String appPackageName){  
       try{  
           Intent intent = this.getPackageManager().getLaunchIntentForPackage(appPackageName);  
           startActivity(intent);  
       }catch(Exception e){  
           Toast.makeText(this, "没有安装", Toast.LENGTH_LONG).show();  
       }  
   }  


同一个apk内部启动另一个activity:

MainActivity:当前所在activity

SetActivity:要启动的activity


Intent intent = new Intent(MainActivity.this,SetActivity.class);
startActivity(intent);


调用apk方法三:今天遇到个坑,如果app启动类名不是MainActivity(现在没时间找原因,总之方法二启动不了了)可能上面的方法就不行了,那就试试下面这个方法吧

/**
* 根据包名启动app 主类名不是MainActivity的情况
* */
public static void RunApp(String packageName,Context mContext) {

PackageInfo pi;
try {
pi = mContext.getPackageManager().getPackageInfo(packageName, 0);
Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
resolveIntent.setPackage(pi.packageName);
PackageManager pManager = mContext.getPackageManager();
List apps = pManager.queryIntentActivities(
resolveIntent, 0);

ResolveInfo ri = (ResolveInfo) apps.iterator().next();
if (ri != null) {
packageName = ri.activityInfo.packageName;
String className = ri.activityInfo.name;
Intent intent = new Intent(Intent.ACTION_MAIN);
ComponentName cn = new ComponentName(packageName, className);
intent.setComponent(cn);
mContext.startActivity(intent);
}
} catch (NameNotFoundException e) {
e.printStackTrace();
}

}