Android之Intent

Intent
1.构造方法
  1.Intent(Context packageContext, Class<?> cls)
    Create an intent for a specific component.
    事例:
    
Intent intent = new Intent
    (MediaPlayerDemo.this.getApplication 
    (),MediaPlayerDemo_Audio.class);

2.得到所有符合条件的Intent(即符合取自AndroidMamifest.xml中的IntentFilter过滤条件)的,将其信息放到List<ResolveInfo>中。
  PackageManager pm = getPackageManager();
        List<ResolveInfo> list = pm.queryIntentActivities(mainIntent, 0);

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