方法一:清单文件
<activity android:name=".activity.MessageActivity"
android:windowSoftInputMode="adjustPan"/>
方法二:Activity的onCreate()中
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
setContentView(R.layout.activity_message);
}