scrollview在android应用程序打开时自动滚动

vnzz0bqm  于 2021-07-09  发布在  Java
关注(0)|答案(1)|浏览(425)

我在我的应用程序中添加了5个视频播放器 java . 当应用程序打开时 ScrollViewscroll-Y 定位为显示第5个视频播放器。我怎样才能避免这种情况?我如何才能关闭自动滚动,以便当应用程序打开时,第一个视频播放器出现,然后 scroll-Y 是0吗? Colors:<color name="secondary_color">#6CABF7</color> <color name="light_black">#202125</color> <color name="dark_black">#0F0F0F</color>activity_main.xml: ```

<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/light_black"
tools:context=".MainActivity">

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="75dp"
    android:background="@color/secondary_color"/>

<ScrollView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginTop="80dp"
    android:layout_marginLeft="10dp"
    android:layout_marginRight="10dp"
    android:tag="yo">

    <LinearLayout
        android:id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical">
    </LinearLayout>
</ScrollView>

</android.support.constraint.ConstraintLayout>
`MainActivity.java:`
package com.example.test;

import android.net.Uri;
import android.support.v7.app.AppCompatActivity;
import android.os.;
import android.view.
;
import android.widget.*;

import org.w3c.dom.Text;

import java.util.ArrayList;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {
LinearLayout content;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    content = findViewById(R.id.content);

    for (int x=0;x<5;x++) {
        RelativeLayout video_player_box = new RelativeLayout(this);
        RelativeLayout.LayoutParams params;
        VideoView player = new VideoView(this);
        TextView details = new TextView(this);

        LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, 600);
        param.setMargins(0,0,0,50);
        video_player_box.setLayoutParams(param);

        params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
        params.setMargins(5,5,5,5);
        player.setLayoutParams(params);
        player.setMediaController(null);
        video_player_box.addView(player);

        params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, 50);
        params.setMargins(5,5,5,0);
        details.setLayoutParams(params);
        details.setPadding(15,0,0,0);
        details.setText(Integer.toString(x+1));
        details.setTextSize(25);
        details.setTextColor(getResources().getColor(R.color.dark_black));
        details.setGravity(Gravity.CENTER_VERTICAL);
        video_player_box.addView(details);

        content.addView(video_player_box);
    }
    ((VideoView) ((RelativeLayout) content.getChildAt(0)).getChildAt(0)).setVideoURI(Uri.parse("https://dash.akamaized.net/akamai/bbb/bbb_320x180_60fps_600k.mp4"));
    ((VideoView) ((RelativeLayout) content.getChildAt(0)).getChildAt(0)).start();
}

}

o75abkj4

o75abkj41#

将它粘贴到我的父线性布局上,作为scrollview的主子级,解决了这个问题。 android:descendantFocusability="blocksDescendants

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