[英]Place a textView in the middle of imageView programatically android
我有一個ImageView和TextView以編程方式聲明(不在任何xml中)。
ImageView img = new ImageView(this);
TextView txt = new TextView(this);
LinearLayout.LayoutParams coordinates = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
img.setLayoutParams(coordinates);
img.setImageResource(R.drawable.img);
txt.setText("a");
如何將文本放在imageview的中間? 我需要“ a”始終位於imageView的中間。
也許您應該只具有文本視圖,並使用圖像作為背景:
textView.setBackgroundResource(R.drawable.img);
實用上可以設置
RelativeLayout relativeLayout=new RelativeLayout(context);
//set Relative Layout Parameter using
RelativeLayout.LayoutParams relativeLayoutParams=new RelativeLayout.LayoutParams(RelativeLayout.MATCH_PARENT,RelativeLayout.MATCH_PARENT);
relativeLayout.setLayoutParams(relativeLayoutParams);
首先創建ImageView
ImageView imageView=new ImageView(context);
relativeLayout.addView(imageView);
然后在其上設置文本視圖
TextView textView=new TextView(context);
relativeLayout.addView(textView);
要以編程方式集中文本,您只需要使用重力
ImageView img = new ImageView(this);
TextView txt = new TextView(this);
LinearLayout.LayoutParams coordinates = new
LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
img.setLayoutParams(coordinates);
img.setImageResource(R.drawable.img);
txt.setText("a");
txt.setGravity(Gravity.CENTER);
要在ImageView的中間顯示它,可以進一步將ImageView的寬度擴展到MATCH_PARENT,這樣文本將始終出現在Imageview的中間
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