跳转微信扫一扫

try {
    Intent intent = new Intent();
    intent.setComponent(new ComponentName("com.tencent.mm", "com.tencent.mm.ui.LauncherUI"));
    intent.putExtra("LauncherUI.From.Scaner.Shortcut", true);
    intent.setFlags(335544320);
    intent.setAction("android.intent.action.VIEW");
    getContext().startActivity(intent);
} catch (Exception e) {
    Toast.makeText(getContext(), "无法跳转到微信，请检查您是否安装了微信！", Toast.LENGTH_SHORT).show();
}

重要的事情说三遍。亲测好使！！！亲测好使！！！亲测好使！！！