Question

我想要启动图像的边距和大小。我有xml中的代码，我想动态编写它。我已经阅读了Stackoverlow中给出的所有答案但是我无法理解它。请帮助我我正在附上下面的xml代码

          <ImageView
            android:id="@+id/coin1"
            android:layout_width="20dp"
            android:layout_height="20dp"
            android:src="@mipmap/coin2"
            android:layout_marginTop="25dp"
            android:layout_toRightOf="@+id/ten_btn"
            android:layout_marginLeft="35dp"
            />

对于这个Xml，我想用java代码编写它。

Answer 1

试试这个：

 ll_layout = (LinearLayout) findViewById(R.id.ll_layout);//parent layout of imageView 
            ImageView imageView = new ImageView(this);//initialize imageview
            imageView.setLayoutParams(new LinearLayoutCompat.LayoutParams(100, 100));//set hight and width
            //or
            imageView.setLayoutParams(new LinearLayoutCompat.LayoutParams((int) getResources().getDimension(R.dimen.iv_width), (int) getResources().getDimension(R.dimen.iv_height)));
            //or
            imageView.setLayoutParams(new LinearLayoutCompat.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));

            ll_layout.addView(imageView);//add image in parent layout

Answer 2

 RelativeLayout root = (RelativeLayout)findViewById(R.id.your_id);
 ImageView iv = new ImageView(YourActivity.this);
 iv.setImageDrawable(getResources().getDrawable(R.drawable.frnd_inactive));
 RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(20,20);
 layoutParams.addRule(RelativeLayout.RIGHT_OF,R.id.ten_btn);
 layoutParams.setMargins(35, 25, 0, 0);
 iv.setLayoutParams(layoutParams);
 root.addView(iv);

请注意，所有值都以像素为单位。要将dp测量值转换为像素，请尝试使用

 Resources r = mContext.getResources();
 int px = (int) TypedValue.applyDimension(
    TypedValue.COMPLEX_UNIT_DIP,
    yourdpmeasure, 
    r.getDisplayMetrics()
 );

如何动态设置图像大小和位置

2 个答案: