Android实现复制粘贴功能

1.在Application中获取ClipboardManager

public class MyApplication extends Application{
    private static Application mApp;
    private static ClipboardManager mClipboardManager;
    @Override
    public void onCreate() {
        super.onCreate();
        mApp = this;
    }
    public static ClipboardManager getClipboardManager(){
        if (mClipboardManager == null) {
            mClipboardManager = (ClipboardManager) mApp.getSystemService(Context.CLIPBOARD_SERVICE);
        }
        return mClipboardManager;
    }
}

2.在工具类中添加弹出复制的Dialog

public class Utils {
    public static void showCopyDialog(Context context , final String content){
        new AlertDialog.Builder(context)
        .setTitle("选项")
        .setItems(new String[]{"复制"}, new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                MyApplication.getClipboardManager().setText(content);
                dialog.dismiss();
            }
        }).show();
    }
}

3.将TextView的内容复制到EditText中

public class MainActivity extends Activity implements OnClickListener{
    private TextView mTextView;
    private EditText mEditText;
    private MyApplication mApp;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mApp = (MyApplication) getApplicationContext();
        initViews();
        registerListener();
    }

    private void registerListener() {
        mTextView.setOnClickListener(this);
    }

    private void initViews() {
        mTextView = (TextView) findViewById(R.id.textView1);
        mEditText = (EditText) findViewById(R.id.editText1);
    }

    @Override
    public void onClick(View v) {
        mTextView.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Utils.showCopyDialog(MainActivity.this, mTextView.getText().toString());
            }
        });
    }


}

4.测试一下