Question

我正在尝试以编程方式对齐RelativeLayout中的一些元素，但我遇到了一些问题。即使我将它们设置为deferentially，我的所有TextView元素都会左上角对齐。这是我的屏幕截图： enter image description here

这是我的代码（this是RelativeLayout）：

        title = new TextView(context);
        date = new TextView(context);
        rating = new RatingBar(context);
        saleImage = new ImageView(context);
        arrowImage = new ImageView(context);

        RelativeLayout.LayoutParams relativeLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        this.setBackgroundResource(R.drawable.list_selector);
        this.setLayoutParams(relativeLayoutParams);
        this.setClickable(true);

        relativeLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        saleImage.setLayoutParams(relativeLayoutParams);
        saleImage.setImageResource(R.drawable.rihanna);
        this.addView(saleImage);

        relativeLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        relativeLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, RelativeLayout.TRUE);
        relativeLayoutParams.addRule(RelativeLayout.CENTER_VERTICAL, RelativeLayout.TRUE);
        arrowImage.setImageResource(R.drawable.arrow);
        arrowImage.setLayoutParams(relativeLayoutParams);
        this.addView(arrowImage);

        relativeLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        relativeLayoutParams.addRule(RelativeLayout.ALIGN_PARENT_TOP, RelativeLayout.TRUE);
        relativeLayoutParams.addRule(RelativeLayout.RIGHT_OF, saleImage.getId());
        title.setLayoutParams(relativeLayoutParams);
        title.setTextAppearance(context, android.R.style.TextAppearance_Medium);
        title.setText("Sale title");
        this.addView(title);

        relativeLayoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
        relativeLayoutParams.addRule(RelativeLayout.CENTER_VERTICAL, RelativeLayout.TRUE);
        relativeLayoutParams.setMargins(0, 0, 26, 0);
        relativeLayoutParams.addRule(RelativeLayout.LEFT_OF, arrowImage.getId());
        date.setTextAppearance(context, android.R.style.TextAppearance_Small);
        date.setText("14.01.13 22:00");
        this.addView(date);

似乎问题出在RelativeLayout.RIGHT_OF和RelativeLayout.LEFT_OF属性上。

这是活动代码：

public class MainPage extends Activity {
    private LinearLayout test;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main_sales);

        test = (LinearLayout)findViewById(R.id.salesConteiner);
        SaleRow row = new SaleRow(this);
        test.addView(row);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) 
    {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main_page, menu);
        return true;
    }

}

我有什么遗漏的吗？感谢!!!

Answer 1

要使view.getId()功能起作用，您首先需要输入一个ID：view.setId(1)。

感谢您的帮助!!!

RelativeLayout参数以编程方式对齐错误

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