Android自定义组件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal">
    <EditText
        android:id="@+id/editText"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:inputType="text"/>
    <Button
        android:id="@+id/clearButton"
        android:layout_width="0dp"
        android:layout_weight="1"
        android:layout_height="wrap_content"
        android:text="Clear"/>

</LinearLayout>

public class ButExt extends LinearLayout {
    private EditText mEditText;
    private Button mButton;

    public ButExt(Context context) {
        super(context);
        //使用布局资源填充视图
        LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        //加载布局文件
        mInflater.inflate(R.layout.buttonext_layout, this, true);
        mEditText = (EditText) findViewById(R.id.editText);
        mButton = (Button) findViewById(R.id.clearButton);
        hookupButton(context);

    }

    /**
     * button处理程序
     */
    private void hookupButton(final Context context) {
        mButton.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                mEditText.setText("");
                Toast.makeText(context, "文本框数据已清除", Toast.LENGTH_SHORT).show();
            }
        });
    }
   /**
    *给EditText赋值
   */

    public void setText(String txt){
       mEditText.setText(txt);
    }

}

public class MainActivity extends AppCompatActivity {
    private LinearLayout mLinearLayout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //动态的添加我们自定义的组件
        mLinearLayout = (LinearLayout) findViewById(R.id.main_layout);
        for (int i = 0; i < 3; i++) {
            imageViewExt editText = new imageViewExt(this);
            editText.setText(i+");
            mLinearLayout.addView(editText);
        }
    }
}