Android复制和粘贴的实现

main.xml如下:

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"            xmlns:tools="http://schemas.android.com/tools"            android:layout_width="match_parent"            android:layout_height="match_parent"            >                    <Button                 android:id="@+id/button"                android:layout_width="wrap_content"                android:layout_height="wrap_content"                android:text="点击后复制"                android:layout_centerHorizontal="true"                android:layout_marginTop="100dip"               />                        <TextView                android:id="@+id/textView"                android:layout_width="150dip"                android:layout_height="50dip"                android:layout_centerInParent="true"                android:hint="粘贴的内容"                android:gravity="center"           />                </RelativeLayout>  

import android.os.Bundle;    import android.text.ClipboardManager;    import android.view.View;    import android.view.View.OnClickListener;    import android.widget.Button;    import android.widget.TextView;    import android.app.Activity;    import android.content.Context;    /**    * Demo描述:    * 实现Android的复制,粘贴功能    */    public class MainActivity extends Activity {        private Button mButton;        private TextView mTextView;        @Override        protected void onCreate(Bundle savedInstanceState) {            super.onCreate(savedInstanceState);            setContentView(R.layout.main);            init();        }        private void init(){            mTextView=(TextView) findViewById(R.id.textView);            mTextView.setOnClickListener(new ClickListenerImpl());            mButton=(Button) findViewById(R.id.button);            mButton.setOnClickListener(new ClickListenerImpl());                    }                private class ClickListenerImpl implements OnClickListener {            @Override            public void onClick(View v) {                switch (v.getId()) {                //复制                case R.id.button:                    ClipboardManager copy = (ClipboardManager) MainActivity.this                    .getSystemService(Context.CLIPBOARD_SERVICE);                     copy.setText("Come On Baby");                    break;                //粘贴                case R.id.textView:                    ClipboardManager plaster = (ClipboardManager) MainActivity.this                    .getSystemService(Context.CLIPBOARD_SERVICE);                    String content=plaster.getText().toString().trim();                    mTextView.setText(content);                    break;                    default:                    break;                }            }            }            }