java - 每个 Activity Android 中的通用进度条

Question

我已经修改了解决方案。我能够获得进度条，但进度条永远不会隐藏

这是创建一个相对布局的进度条的类

public class ProgressBarHandler {
    private ProgressBar mProgressBar;
    private Context mContext;
    private View _baseView;
    private View _hideView;
    public ProgressBarHandler(Context context,View baseView, View hideView) {
        mContext = context;
        _baseView = baseView;
        _hideView = hideView;

        ViewGroup layout = (ViewGroup) _baseView;//((Activity) context).findViewById(android.R.id.content).getRootView();

        mProgressBar = new ProgressBar(context, null, android.R.attr.progressBarStyleLarge);
        mProgressBar.setIndeterminate(true);

        RelativeLayout.LayoutParams params = new
                RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);

        RelativeLayout rl = new RelativeLayout(context);

        rl.setGravity(Gravity.CENTER);
        rl.addView(mProgressBar);

        layout.addView(rl, params);

        hide();
    }

    public void show() {
        mProgressBar.setVisibility(View.VISIBLE);
        _hideView.setVisibility(View.INVISIBLE);
    }

    public void hide() {
        mProgressBar.setVisibility(View.INVISIBLE);
        _hideView.setVisibility(View.VISIBLE);
    }
}

这是我的xml文件

<FrameLayout xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:descendantFocusability="beforeDescendants"
    android:focusableInTouchMode="true"
    android:orientation="vertical"
    android:id="@+id/profile_activity">


<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
    android:id="@+id/layout_to_hide"
android:layout_height="match_parent"
android:fitsSystemWindows="true">

<android.support.design.widget.AppBarLayout
    android:id="@+id/app_bar_layout"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:fitsSystemWindows="true"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

    <android.support.design.widget.CollapsingToolbarLayout
        android:id="@+id/collapsing_toolbar"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:fitsSystemWindows="true"
        app:expandedTitleTextAppearance="@android:color/transparent"
        app:contentScrim="?attr/colorPrimary"
        app:layout_scrollFlags="scroll|exitUntilCollapsed">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical">

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@mipmap/wallpaper"
                android:orientation="vertical">

                <com.deerwalk.androidcommon.RoundedImageView
                    android:id="@+id/profile_image"
                    android:layout_width="100dp"
                    app:civ_border_color="#EEEEEE"
                    app:civ_border_width="4dp"
                    app:civ_shadow="true"
                    app:civ_shadow_radius="10"
                    app:civ_shadow_color="#8BC34A"
                    android:layout_height="100dp"
                    android:layout_alignWithParentIfMissing="false"
                    android:layout_centerInParent="true"
                    android:layout_gravity="center"
                    android:layout_margin="20dp"
                    android:src="@drawable/avatar" />

                <LinearLayout
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="10dp"
                    android:layout_below="@+id/profile_image"
                    android:orientation="vertical">

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="match_parent"
                        android:id="@+id/txt_name"
                        android:layout_gravity="center_horizontal"
                        android:text=""
                        android:textColor="@color/white" />

                    <TextView
                        android:layout_width="wrap_content"
                        android:layout_height="match_parent"
                        android:id="@+id/txt_dob"
                        android:layout_gravity="center_horizontal"
                        android:text=""
                        android:layout_marginTop="5dp"
                        android:textColor="@color/white" />
                </LinearLayout>
            </RelativeLayout>



        </LinearLayout>
    </android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>


<android.support.v7.widget.RecyclerView
    android:id="@+id/recyclerView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">


</android.support.v7.widget.RecyclerView>

</android.support.design.widget.CoordinatorLayout>
</FrameLayout>

这是调用进度条的 Activity 类

public class ProfileActivity extends AppCompatActivity {

    FrameLayout profile_root_layout;
    CoordinatorLayout layot_to_hide;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_profile);
        profile_root_layout = (FrameLayout) findViewById(R.id.profile_activity);
        layot_to_hide = (CoordinatorLayout) findViewById(R.id.layout_to_hide);
         new userProfileTask().execute();
    }




    public class userProfileTask extends AsyncTask<Void, Void, Boolean> {
        @Override
        protected void onPreExecute() {
            new ProgressBarHandler(getBaseContext(),profile_root_layout,layot_to_hide).show();
            super.onPreExecute();
        }

        @Override
        protected Boolean doInBackground(Void... params) {
            try {
                Thread.sleep(2000);

            } catch (InterruptedException e) {
                e.printStackTrace();
            }

            return null;
        }

        @Override
        protected void onPostExecute(Boolean aBoolean) {

            new ProgressBarHandler(getBaseContext(),profile_root_layout,layot_to_hide).hide();
        }
    }

}

进度条永远不会隐藏。我在哪里做错了。

Answer 1

制作一个单独的类，然后制作一个带有参数的静态方法，参数包含 Activity ...在您的 Activity 上调用此方法并在其中传递 Activity 名称