小编Teo*_*ong的帖子

我正在尝试通过textview实现标记.我输入EditText的内容,然后按一个按钮添加标签.我是以编程方式在文本视图中添加填充和矩形背景,但填充设置没有任何效果.如何添加填充以使其有效？

public void tag_it_callback (View view) {
    Log.v("actv", "tag it callback");
    LinearLayout main_layout = (LinearLayout) findViewById(R.id.main_layout);

    TextView tv = new TextView(this);

    tv.setText( ((EditText) findViewById(R.id.textfield)).getText() );
    main_layout.addView(tv);

    transform_tag(tv);
}

public void transform_tag(TextView tv) {

    // set padding and background
    int padding = 10;
    tv.setPaddingRelative(20, 20, 20, 20);
    tv.setPadding(20, 20, 20, 20);
    tv.setBackgroundResource(R.drawable.border);

    // set layout width and height
    LayoutParams params= (LayoutParams) tv.getLayoutParams();
    Log.v("actv", "params "+params);
    if ( params != null ) {
        params.width=LayoutParams.WRAP_CONTENT;
        params.height=LayoutParams.WRAP_CONTENT;
    } else {
        params = new LayoutParams(LayoutParams.WRAP_CONTENT, …