android 解决输入法键盘遮盖布局问题

/**
* @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在可见区域的底部
int srollHeight = (location[1] + scrollToView.getHeight()) - rect.bottom;
root.scrollTo(0, srollHeight);
} else {
//键盘隐藏
root.scrollTo(0, 0);
}
}
});
}

效果图如下：





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);
}
}
});
}

}

2. 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>