以編程方式將按鈕添加到視圖上

如果我想在此類中添加一個按鈕以便我可以調用onclicklistener，我應該怎麼做？我還提供了添加此視圖的活動類。以編程方式將按鈕添加到視圖上

活動：

import android.app.Activity; 
import android.os.Bundle; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.view.ViewGroup.LayoutParams; 
import android.widget.Button; 
import android.widget.RelativeLayout; 

import android.content.Context; 



public class NewGame extends Activity { 

View view; 
Context context; 
RelativeLayout layout; 
GameView gameview; 

@Override 
public void onCreate(Bundle savedInstanceState) 
{ 
    super.onCreate(savedInstanceState); 
    gameview=new GameView(this); 
    setContentView(gameview); 
    //layout = (RelativeLayout) findViewById(R.id.relative_layout); 



    //layout.addView(gameview); 

} 


}

觀點：公共類GameView擴展視圖{ 路徑循環; Paint cPaint; Paint tPaint; String z; int i = 65，strt，arc，leftx，topy，rightx，bottomy，maxx，maxy; 布爾標誌1，標誌2，標誌3; double n1，n2; int n，n3 = 180，n4，n5 = 90; float f1 = 180，f2 = 90; 按鈕b1; 隨機r = new Random（）; RectF橢圓形;

public GameView(Context context) { 
     super(context); 

     leftx = 0; 
     topy = 60; 
     rightx = 150; 
     bottomy = 120; 

     z = String.valueOf(Character.toChars(i)); 

     cPaint = new Paint(); 
     cPaint.setColor(Color.RED); 

     strt = 45; 
     arc = 315; 

     n1 = Math.random() * 600; 
     Log.d("random", z); 

     if (flag2 == false) 
      new DrawThread(this); 

     // cPaint.setStrokeWidth(2); 
     tPaint = new Paint(Paint.ANTI_ALIAS_FLAG); 
     tPaint.setStyle(Paint.Style.FILL_AND_STROKE); 
     tPaint.setColor(Color.BLACK); 
     float scale = getResources().getDisplayMetrics().scaledDensity; 
     tPaint.setTextSize(20 * scale); 
    } 

    public void onSizeChanged(int w,int h,int oldh,int oldw) { 
     maxx = oldw; 
     maxy = oldh; 
    } 

    //@Override 
    protected void onDraw(Canvas canvas) { 
     // Drawing commands go here 
     oval = new RectF(leftx,topy,rightx,bottomy); 
     canvas.drawArc(oval, strt, arc, true, cPaint); 
     while (i < 90) { 
      canvas.drawText(String.valueOf(Character.toChars(i)),f1,f2, tPaint); 
      break; 
     } 
    } 
}

來源

2013-07-18 user2586942

你可以這樣說：

Button bt = new Button(this); 
bt.setText("A Button"); 
bt.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT)); 
linerLayout.addView(bt);

然後你就可以做到這一點

bt.setOnClickListener(new View.OnClickListener() { 

//TO DO 
}

我希望這可以幫助你。

來源

2013-07-18 12:01:29

首先爲了讓您的自定義視圖具有addView（View v）方法，它必須擴展ViewGroup而不是View;那麼你可以使用這個代碼

b1=new Button(context); 
b1.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT)); 
b1.setOnClickListener(new View.OnClickListener() { 

      @Override 
      public void onClick(View v) { 
       // TODO Auto-generated method stub 

      } 
     }); 
     this.addView(b1);

來源

2013-07-18 12:05:38 Apperside

做完你上面提到的，我現在正在變黑屏。你認爲可能是什麼問題？ – user2586942

嘗試爲按鈕b1.setId（1234） – Apperside

仍設爲空白屏幕 – user2586942

以編程方式將按鈕添加到視圖上

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