如何創建2個或2個以上按鈕的Android

Question

我想創建2或android系統中超過2兩按鈕，但我在這行

View btnClick = findViewById(R.id.buttonClick); 
    View btnscan = findViewById(R.id.btscanClick); 
    //set event listener 
    btnClick.setOnClickListener(this); 
} 

//override the OnClickListener interface method 
@Override 
public void onClick(View arg0) { 
    if(arg0.getId() == R.id.buttonClick){ 
     //define a new Intent for the second Activity 
     Intent intent = new Intent(this,SecondActivity.class); 
     //start the second Activity 
     this.startActivity(intent); 

public void onClick1(View arg1) { 
    if(arg1.getId() == R.id.btscanClick){ 
     //define a new Intent for the second Activity 
     Intent intent = new Intent(this,ScanActivity.class); 
     //start the second Activity 
     this.startActivity(intent); 

Answer 1

可能是問題將與你的設計，我的事情你是在表面觀實現它。如果你這樣做讓與的LinearLayout和RelativeLayout的佈局，這將是更好，如果你還可以添加你的.manifestfile

Answer 2

嘿投你的看法按鈕即代替得了的問題的

View btnscan = findViewById(R.id.btscanClick);

使用

Button btnscan = (Button)findViewById(R.id.btscanClick);

也會發布您收到的錯誤，以便我可以幫助您。

Answer 3

添加監聽到其他按鈕以及

Button btnscan = (Button)findViewById(R.id.btscanClick); 
btnscan.setOnClickListener(this); 

Button btnclick = (Button)findViewById(R.id.buttonClick); 
btnclick.setOnClickListener(this); 

而讓處理只有一個OnClick方法點擊。

public void onClick(View arg0) { 

if(arg0.getId() == R.id.buttonClick){ 
    //define a new Intent for the second Activity 
    Intent intent = new Intent(this,SecondActivity.class); 
    //start the second Activity 
    this.startActivity(intent); 
    } 
else if(arg1.getId() == R.id.btscanClick){ 
    //define a new Intent for the second Activity 
    Intent intent = new Intent(this,ScanActivity.class); 
    //start the second Activity 
    this.startActivity(intent); 
    } 
} 

Answer 4

你平時想去定義OnClickListener的按鈕的方法是如下：

btnClick.setOnClickListener(new OnClickListener() { 
    @Override 
    public void onClick(View arg0) { 
      //define a new Intent for the second Activity 
      Intent intent = new Intent(this,SecondActivity.class); 
      //start the second Activity 
      this.startActivity(intent); 
    } 
}); 

btnScan.setOnClickListener(new OnClickListener() { 
    @Override 
    public void onClick(View arg0) { 
      //define a new Intent for the scan Activity 
      Intent intent = new Intent(this,ScanActivity.class); 
      //start the second Activity 
      this.startActivity(intent); 
    } 
}); 

這意味着您爲每個按鈕使用不同的onClickListener。