android 解决输入法键盘遮盖布局问题

2017-12-05  本文已影响683人  海云志

下面提供完整的代码及布局文件:

  1. MainActivity
    public class MainActivity extends Activity {

    private LinearLayout mRoot;
    private Button mSubmit;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mRoot = (LinearLayout) findViewById(R.id.root);
    mSubmit = (Button) findViewById(R.id.submit);
    controlKeyboardLayout(mRoot, mSubmit);
    }

    /**

    • @param root 最外层布局,需要调整的布局
    • @param scrollToView 被键盘遮挡的scrollToView,滚动root,使scrollToView在root可视区域的底部
      */
      private void controlKeyboardLayout(final View root, final View scrollToView) {
      root.getViewTreeObserver().addOnGlobalLayoutListener( new OnGlobalLayoutListener() {
      @Override
      public void onGlobalLayout() {
      Rect rect = new Rect();
      //获取root在窗体的可视区域
      root.getWindowVisibleDisplayFrame(rect);
      //获取root在窗体的不可视区域高度(被其他View遮挡的区域高度)
      int rootInvisibleHeight = root.getRootView().getHeight() - rect.bottom;
      //若不可视区域高度大于100,则键盘显示
      if (rootInvisibleHeight > 100) {
      int[] location = new int[2];
      //获取scrollToView在窗体的坐标
      scrollToView.getLocationInWindow(location);
      //计算root滚动高度,使scrollToView在可见区域
      int srollHeight = (location[1] + scrollToView.getHeight()) - rect.bottom;
      root.scrollTo(0, srollHeight);
      } else {
      //键盘隐藏
      root.scrollTo(0, 0);
      }
      }
      });
      }

}

  1. activity_main.xml
    <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/root"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:gravity="center_vertical" >

    <EditText android:layout_width="fill_parent"
    android:layout_height="50dip"
    android:hint="edit1"/>
    <EditText android:layout_width="fill_parent"
    android:layout_height="50dip"
    android:hint="edit2"/>
    <EditText android:layout_width="fill_parent"
    android:layout_height="50dip"
    android:hint="edit3"/>
    <Button android:id="@+id/submit"
    android:layout_width="fill_parent"
    android:layout_height="50dip"
    android:text="submit"/>

</LinearLayout>

原文地址:http://blog.csdn.net/yqichang/article/details/11705235

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