relativelayout

我们在平时的实战开发过程中经常会碰到这样的一些需求，我们要点击一个小按钮弹出一个DialogFragment或者点击之后跳转到另外一个界面上去，我们发现由于按钮太小了不容易点击，这样的体验非常不好，怎么办？ 效果图 很多长人肯定会说给View加个Padding就行了嘛，是的这样可以解决问题，但是你有没有想过如果该View有背景图，结果你加了个Padding ，View的背景图变形了，这种情况下通过加Padding加大点击范围的方案就行不通了，如何破解？其实很简单，稍微懂点脑筋就把这个问题解决了，我们给这个小按钮外围包裹一个LinearLayout或RelativeLayout，当我们点击外围的LinearLayout或RelativeLayout的时候把这个事件传递给小按钮问题立马就解决了 关键代码: public class FatArrowView extends RelativeLayout { //拦截事件 @Override public boolean onInterceptTouchEvent(MotionEvent ev) {（ http://www.my516.com） Log.v(TAG,"onInterceptTouchEvent start..."); return true; } //把事件分发给我们的子View CheckBox @Override

I'm having trouble finding exactly the syntax I need to use to set the paramters on child views of a relative layout. I have a root relative layout that I want to set 2 child textviews next to each other like this ---------- --------- | Second | | First | ---------- --------- So I have public class RL extends RelativeLayout{ public RL(context){ TextView first = new TextView(this); TextView second = new TextView(this); first.setText('First'); first.setId(1); second.setText('Second'); second.setId(2); addView(first, new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP

I am getting an error in my logcat saying "Your content must have a ListView whose id attribute is 'android.R.id.list'". My code compiles and runs but force closes when I start my listview activity. I've checked on many similar questions, it seems to be a common problem but I am still unable to fix my code. The Declaration: private ListView lv; Context mContext; List mList; String[] testcontacts; MessageView aa = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.firstlist); testcontacts = getResources() .getStringArray

I want to move from one activity to another (using virtual device). When I click on button to move, My emulator ones a dialog box showing unfortunately SMS1 has stopped working (SMS1 is my app name). Can anybody help me in correcting my code? MainActivity.java: package com.example.sms1; import android.os.Bundle; import android.app.Activity; import android.content.Intent; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.TextView; public class MainActivity extends Activity implements OnClickListener

使用RelativeLayout即可实现重叠布局——RelativeLayout标签内容里面的 下层布局会浮现在上层布局之上；上层布局会被下层布局覆盖 实现layout： <RelativeLayout android:layout_width="match_parent" android:layout_height="200dp" android:background="#FFE4C4"> <LinearLayout android:layout_width="300dp" android:layout_height="100dp" android:background="#303F9F"></LinearLayout> <LinearLayout android:layout_width="200dp" android:layout_height="100dp" android:background="#FF4081" android:layout_marginLeft="50dp" android:layout_marginTop="50dp"></LinearLayout> </RelativeLayout> 实现效果： 来源： CSDN 作者： meixi_android&java 链接： https://blog.csdn.net/meixi_android

这是我Android学习的第一天，第一堂课的作业是写两个button，分别实现点击显示hello world 和图片消息。 实现代码如下： activity_main.xml: 1 <?xml version="1.0" encoding="utf-8"?> 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 xmlns:app="http://schemas.android.com/apk/res-auto" 4 xmlns:tools="http://schemas.android.com/tools" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent" 7 tools:context="com.example.zhangqiongwen.homework1.MainActivity" 8 tools:layout_editor_absoluteY="81dp"> 9 10 <include layout="@layout/button"> 11 12 </include> 13 </RelativeLayout> button.xml: 1 <?xml version=