Android 如何以编程方式在布局文件底部添加多个视图而不使它们重叠

我已使用Stack Exchange和其他工具上的资源成功地将新视图添加到布局的底部。但是，如果我尝试以编程方式添加第二个视图，则这两个视图似乎重叠

此代码块成功地将新视图添加到我的布局文件中

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

        RelativeLayout activityMain = (RelativeLayout)findViewById(R.id.activity_main);

        // First view
        View playControlsPanelMinimized = new View(this);
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        params.width = ViewGroup.LayoutParams.MATCH_PARENT;
        final float scale = activityMain.getContext().getResources().getDisplayMetrics().density;
        float dps = 10;
        int pixels = (int) (dps * scale + 0.5f);
        params.height = pixels;
        playControlsPanelMinimized.setLayoutParams(params);
        playControlsPanelMinimized.setBackgroundColor(Color.parseColor("#00FFFF"));
        params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        activityMain.addView(playControlsPanelMinimized);

然而，当我通过简单地用新变量重复代码来添加第二个视图时，我看到了一个重叠行为，结果我只看到了第一个视图

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

        RelativeLayout activityMain = (RelativeLayout)findViewById(R.id.activity_main);

        // First view
        View playControlsPanelMinimized = new View(this);
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        params.width = ViewGroup.LayoutParams.MATCH_PARENT;
        final float scale = activityMain.getContext().getResources().getDisplayMetrics().density;
        float dps = 10;
        int pixels = (int) (dps * scale + 0.5f);
        params.height = pixels;
        playControlsPanelMinimized.setLayoutParams(params);
        playControlsPanelMinimized.setBackgroundColor(Color.parseColor("#00FFFF"));
        params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        activityMain.addView(playControlsPanelMinimized);

        // Second View
        View playControlsPanelMinimized2 = new View(this);
        RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        params.width = ViewGroup.LayoutParams.MATCH_PARENT;
        final float scale2 = activityMain.getContext().getResources().getDisplayMetrics().density;
        float dps2 = 10;
        int pixels2 = (int) (dps2 * scale2 + 0.5f);
        params2.height = pixels2;
        playControlsPanelMinimized2.setLayoutParams(params2);
        playControlsPanelMinimized2.setBackgroundColor(Color.parseColor("#00FFFF"));
        params2.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        activityMain.addView(playControlsPanelMinimized2);

编辑：

我将

activity\u main.xml

更改为LinearLaout，并相应地调整了变量，但现在我不再看到视图

        LinearLayout activityMain = (LinearLayout)findViewById(R.id.activity_main);

        // First View
        View playControlsPanelMinimized = new View(this);
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        params.width = ViewGroup.LayoutParams.MATCH_PARENT;
        final float scale = activityMain.getContext().getResources().getDisplayMetrics().density;
        float dps = 10;
        int pixels = (int) (dps * scale + 0.5f);
        params.height = pixels;
        playControlsPanelMinimized.setLayoutParams(params);
        playControlsPanelMinimized.setBackgroundColor(Color.parseColor("#00FFFF"));
        //params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        activityMain.addView(playControlsPanelMinimized);

编辑

我正在尝试一种新的技术，使用相对布局方法，但到目前为止没有任何效果

View playControlsPanelMinimized = new LinearLayout(this);
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        params.width = ViewGroup.LayoutParams.MATCH_PARENT;
        final float scale = activityMain.getContext().getResources().getDisplayMetrics().density;
        float dps = 10;
        int pixels = (int) (dps * scale + 0.5f);
        params.height = pixels;
        playControlsPanelMinimized.setLayoutParams(params);
        playControlsPanelMinimized.setBackgroundColor(Color.parseColor("#00FFFF"));
        params.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
        activityMain.addView(playControlsPanelMinimized);

        View A = new View(this);
        View B = new View(this);
        RelativeLayout.LayoutParams params2 = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        A.setLayoutParams(params2);
        B.setLayoutParams(params2);

        playControlsPanelMinimized.addView(A);
        playControlsPanelMinimized.addView(B);

---

用水平或垂直方向的线性布局替换您的相对活动_main

• 使用lnearLayout而不是相对布局，可能需要使用weightsum 将方向设置为垂直/水平
• 将视图置于其他视图的右侧，并在xml中设置它

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