Android SeekBarChangeListener和TouchListener无事件

Question

我遇到按钮点击事件和搜索栏事件未触发的问题.当我在我的搜索栏上拖动时,滑块会直观地改变位置,但是我的搜索没有被触发的事件OnSeekBarChangedListener.我也有一个ImageButton应该接收点击事件,但它也不会触发.底部的MyView可以正确处理触摸事件.它有一个GLSurfaceView我可以平移和捏缩放.什么可能导致事件不发生？

这是我的布局:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/tec_root">

    <ImageButton
        android:id="@+id/button_star"
        android:contentDescription="@string/star_description"
        android:layout_width="32dp"
        android:layout_height="32dp"
        android:layout_marginTop="16dp"
        android:layout_marginRight="16dp"
        android:layout_marginEnd="16dp"
        android:layout_alignParentTop="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:src="@drawable/star_empty"
        android:background="#00000000"
        android:scaleType="fitXY"/>

    <LinearLayout
        android:id="@+id/view_plot"
        android:orientation="horizontal"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_below="@id/button_star"/>

    <SeekBar
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_toLeftOf="@id/button_star"
        android:layout_toStartOf="@id/button_star"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:progress="50"
        android:layout_alignBaseline="@id/button_star"
        android:id="@+id/seekbar" />

</RelativeLayout>

以下是听众:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.my_activity);

    prefs = getSharedPreferences(PREFS_NAME, MODE_PRIVATE);
    starred = prefs.getBoolean("starred", false);

    final ImageButton starButton = (ImageButton) findViewById(R.id.button_star);
    starButton.setImageDrawable(ContextCompat.getDrawable(this, (starred ? R.drawable.star_filled :
            R.drawable.star_empty)));

    starButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            starred = !starred;

            prefsEditor = prefs.edit();
            prefsEditor.putBoolean("starred", starred);
            prefsEditor.apply();

            starButton.setImageDrawable(ContextCompat.getDrawable(getApplicationContext(),
                    (starred ? R.drawable.star_filled : R.drawable.star_empty)));
        }
    });

    ((SeekBar) findViewById(R.id.seekbar)).setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            Log.e("TEST", "Seekbar onProgressChanged called");
            Toast.makeText(getApplicationContext(), "Seekbar fired", Toast.LENGTH_SHORT).show();
            // respond to update
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {

        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {

        }
    });

    MyView myView = new MyView(this, points, false);
    ((LinearLayout) findViewById(R.id.view_plot)).addView(myView);
}

Answer 1

尝试将您的代码更改为：

MyView myView = new MyView(this, points, false);
    myView.setLayoutParams(new LinearLayout.LayoutParams(
                                         LinearLayout.LayoutParams.MATCH_PARENT,
                                         LinearLayout.LayoutParams.MATCH_PARENT));
((LinearLayout) findViewById(R.id.view_plot)).addView(myView);