使用ClipboardManager剪贴板实现复制粘贴功能

经常要使用复制粘贴的功能，比如长安一个TextView弹出一个Pop，Pop中有一个选项“复制文本”，点击这个选项就把内容复制到了剪贴板上。

注意SDK11之前请使用android.text.ClipboardManager ，
SDK11起android.text.ClipboardManager被废弃，使用它的子类android.content.ClipboardManager替代，同样被废弃还有setText/getText/hasText方法，使用setPrimaryClip/getPrimaryClip/hasPrimaryClip替代

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends Activity {

   private ClipboardManager myClipboard;
   private ClipData myClip;
   private EditText copyField,pasteField;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      myClipboard = (ClipboardManager)getSystemService(CLIPBOARD_SERVICE);
      copyField = (EditText)findViewById(R.id.editText1);
      pasteField = (EditText)findViewById(R.id.editText2);

   }

   @SuppressLint("NewApi")
   public void copy(View view){
      String text = copyField.getText().toString();
      myClip = ClipData.newPlainText("text", text);
      myClipboard.setPrimaryClip(myClip);
      Toast.makeText(getApplicationContext(), "Text Copied", 
      Toast.LENGTH_SHORT).show();
   }

   @SuppressLint("NewApi")
   public void paste(View view){
      ClipData abc = myClipboard.getPrimaryClip();
      ClipData.Item item = abc.getItemAt(0);
      String text = item.getText().toString();
      pasteField.setText(text);
      Toast.makeText(getApplicationContext(), "Text Pasted", 
      Toast.LENGTH_SHORT).show();
   }

   @Override
   public boolean onCreateOptionsMenu(Menu menu) {
      // Inflate the menu; this adds items to the action bar if it is present.
      getMenuInflater().inflate(R.menu.main, menu);
      return true;
   }

}

布局：

<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"
   android:paddingBottom="@dimen/activity_vertical_margin"
   android:paddingLeft="@dimen/activity_horizontal_margin"
   android:paddingRight="@dimen/activity_horizontal_margin"
   android:paddingTop="@dimen/activity_vertical_margin"
   tools:context=".MainActivity" >

   <TextView
      android:id="@+id/textView1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignParentLeft="true"
      android:layout_alignParentTop="true"
      android:layout_marginLeft="25dp"
      android:layout_marginTop="19dp"
      android:text="@string/copytext"
      android:textAppearance="?android:attr/textAppearanceLarge" />

   <EditText
      android:id="@+id/editText1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignLeft="@+id/textView1"
      android:layout_below="@+id/textView1"
      android:layout_marginTop="20dp"
      android:ems="10" >

      <requestFocus />
   </EditText>

   <TextView
      android:id="@+id/textView2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignLeft="@+id/editText1"
      android:layout_centerVertical="true"
      android:text="@string/pastetext"
      android:textAppearance="?android:attr/textAppearanceLarge" />

   <Button
      android:id="@+id/button1"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignLeft="@+id/editText1"
      android:layout_below="@+id/editText1"
      android:layout_marginLeft="65dp"
      android:layout_marginTop="20dp"
      android:onClick="copy"
      android:text="@string/copy" />

   <EditText
      android:id="@+id/editText2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignLeft="@+id/textView2"
      android:layout_below="@+id/textView2"
      android:layout_marginTop="39dp"
      android:ems="10" />

   <Button
      android:id="@+id/button2"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_alignLeft="@+id/button1"
      android:layout_below="@+id/editText2"
      android:layout_marginTop="34dp"
      android:onClick="paste"
      android:text="@string/paste" />

</RelativeLayout>

http://chenfeicqq.iteye.com/blog/1888406