浅谈如何获得布局对象

方法一 ：先用xml文件进行静态布局，然后利用反射器LayoutInflater类调用方法getLayoutInflater()获取对象,将容器对象加载到VIEW类里,设置监听

LayoutInflater inflater =getLayoutInflater();  

LinearLayout ly = (LinearLayout) inflater.inflate(R.layout.testview,null);  

setContentView(ly);  

Button testbtn = (Button)ly.findViewById(R.id.testBtn);  

final TextView dispalyView = (TextView)ly.findViewById(R.id.disPlayView);  

testbtn.setOnClickListener(new View.OnClickListener() 

{ @Override  

public void onClick(View v) 

{ dispalyView.setText("测试");  

}  

});

方法二：利用getSystemService(LAYOUT_INFLATER_SERVICE)获取布局文件

LayoutInflater inflater =(LayoutInflater) getSystemService(LAYOUT_INFLATER_SERVICE);  

LinearLayout ly = (LinearLayout) inflater.inflate(R.layout.testview,null);  

setContentView(ly);  

Button testbtn = (Button)ly.findViewById(R.id.testBtn);  

final TextView dispalyView = (TextView)ly.findViewById(R.id.disPlayView);  

testbtn.setOnClickListener(new View.OnClickListener() 

{ @Override  

public void onClick(View v) {  

} });

方法三：

无需静态布局实现测试效果

LinearLayout ly =new LinearLayout(this);  

ly.setOrientation(LinearLayout.VERTICAL);  

ly.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));  

//设置控件  

final TextView dispalyView = new TextView(this);  

dispalyView.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT)); dispalyView.setText("测试"); //可以设置相关属性    

ly.addView(dispalyView);  

Button button1 = new Button(this);  

button1.setLayoutParams(new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,ViewGroup.LayoutParams.WRAP_CONTENT)); button1.setText("测试按钮1");  

ly.addView(button1);  

button1.setOnClickListener(new View.OnClickListener() //监听

{ @Override  

public void onClick(View v) {  

} });  

setContentView(ly);//加载LinearLayout对象

LayoutInflater是用来找layout下的xml布局文件，并且实例化；而findViewById()是找xml布局文件的具体控件，如Button、TextView等。