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Intent mIntent = new Intent( );
ComponentName comp = new ComponentName("com.installed.project1
", "com.installed.project1.ActivityMain
");
mIntent.setComponent(comp);
mIntent.setAction("android.intent.action.VIEW");
startActivity(mIntent);
finish(); (如果不止1个Activity 在活动,就结束所有Activity)
Intent mIntent = new Intent(“android.intent.action.MAIN");
ComponentName comp = new ComponentName("com.installed.project1", "com.installed.project1.ActivityMain");
mIntent.setComponent(comp);
mIntent.addCategory("android.intent.category.LAUNCHER");
startActivity(mIntent);
finish();