ImageView.setBackgroundResource 在 NavigationDrawer 中不起作用

Question

我在导航抽屉中有一个相对布局。它包括一个文本视图和一个图像视图。我设置了 onClick 属性="onMenuHome" tu 相对布局

public void onMenuHome(View v) {
        RelativeLayout rlayHome = (RelativeLayout) findViewById(R.id.rlay_main_home);
        ImageView imgvHome = (ImageView) findViewById(R.id.imgv_main_home);
        TextView txtvHome = (TextView) findViewById(R.id.txtv_main_home);
        rlayHome.setBackgroundResource(R.color.clr_disabledLight);
        imgvHome.setBackgroundResource(R.drawable.ic_home_c);
        txtvHome.setTextColor(getResources().getColor(R.color.clr_primaryColor));

        Fragment fragment = new HomeFragment();
        FragmentManager fragmentManager = getSupportFragmentManager();
        fragmentManager.beginTransaction()
                .replace(R.id.frml_main_fragment, fragment).commit();

        mTitle = getResources().getString(R.string.str_home);
        getSupportActionBar().setTitle(mTitle);
        mDrawerLayout.closeDrawers();
    }

所以相对布局的背景和 textview 的 textcolor 会发生变化。但它不能改变imageview的src。 谁能帮帮我？

Answer 1

你需要坚持你正在处理的那个视图..

RelativeLayout rl =(RelativeLayout) findViewById(R.id.rlay_main_home_);
// then find views components (i.e buttons, textviews) via above view
Button btn = (Button) rl.findViewById(R.id.btn_id);

你的完整答案是：

    public void onMenuHome(View v) {
    RelativeLayout rlayHome = (RelativeLayout) findViewById(R.id.rlay_main_home);
    ImageView imgvHome = (ImageView)rlayHome .findViewById(R.id.imgv_main_home);
    TextView txtvHome = (TextView)rlayHome .findViewById(R.id.txtv_main_home);
    rlayHome.setBackgroundResource(R.color.clr_disabledLight);
    imgvHome.setBackgroundResource(R.drawable.ic_home_c);
    txtvHome.setTextColor(getResources().getColor(R.color.clr_primaryColor));

    Fragment fragment = new HomeFragment();
    FragmentManager fragmentManager = getSupportFragmentManager();
    fragmentManager.beginTransaction()
            .replace(R.id.frml_main_fragment, fragment).commit();

    mTitle = getResources().getString(R.string.str_home);
    getSupportActionBar().setTitle(mTitle);
    mDrawerLayout.closeDrawers();
}