1.圆角按钮:
shape.xml:
<?xml version="1.0" encoding="UTF-8"?>
<shape
xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<!-- 填充的颜色 -->
<solid android:color="#FFFFFF" />
<!-- 设置按钮的四个角为弧形 -->
<!-- android:radius 弧形的半径 -->
<corners android:radius="5dip" />
<!-- padding:Button里面的文字与Button边界的间隔 -->
<padding
android:left="10dp"
android:top="10dp"
android:right="10dp"
android:bottom="10dp"
/>
</shape>
------------------------------------------------------------
<Button
android:id="@+id/roundButton"
android:text=" 圆角按钮 "
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/shape"
/>
2.圆角输入框:
input_shape.xml:
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle" android:padding="10dp">
<solid android:color="#FFFFFF" />
<stroke android:width="1dp" android:color="#808080"/>
<corners android:bottomRightRadius="15dp"
android:bottomLeftRadius="15dp" android:topLeftRadius="15dp"
android:topRightRadius="15dp" />
</shape>
---------------------------------------------------------------
![](/qrcode.jpg)
<EditText
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/input_shape"
android:paddingBottom="10dip"
android:paddingLeft="50dip"
android:paddingTop="10dip"
android:text="请输入您的用户名"
android:textColor="#FFFAFA" />
3.图片缩小:
<ImageView android:id="@+id/img"
android:src="@drawable/logo"
android:scaleType="centerInside"
android:layout_width="60dip"
android:layout_height="60dip"
android:layout_centerVertical="true"/>
4.TextView太长添加滚动条:
<ScrollView
android:id="@+id/scrollView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" >
<TextView
android:id="@+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"
android:text="TextView" />
</ScrollView>
5.除去页面标题栏:
<activity android:name=".LoadingSystem" android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
</activity>
6.取消EditText自动获取焦点行为:
在EditText的父级控件添加:
android:focusable="true"
android:focusableInTouchMode="true"
7.Android控件的显示与隐藏:
setVisible(VIew.GONE);//隐藏 并且不占用界面空间
setVisible(VIew.VISIBLE);//控件显示
setVisible(VIew.INVISIBLE);//控件隐藏 占用界面空间
8.单选框:
<RadioGroup
android:id="@+id/gendergroup"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<RadioButton
android:id="@+id/girl"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/girl" />
<RadioButton
android:id="@+id/boy"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/boy" />
</RadioGroup>
9.让listView显示的数据靠下方显示:
android:stackFromBottom="true"
10.android设置字体颜色:
tv.setTextColor(this.getResources().getColor(R.color.textColor_black));
11.TextView过长设置显示省略号:
android:ellipsize="end"
android:singleLine="false"
android:maxLines="2"
12.在代码中设置ImageView的src属性:
setImageDrawable(drawable);
setImageBitmap(bm);
setImageResource(resId);
pic1.setImageBitmap(BitmapFactory.decodeResource(getResources(),R.drawable.add_element_img));
13.Drawable与Bitmap的相互转换
//Drawable--->Bitmap
public static Bitmap drawableToBitmap(Drawable drawable) {
return ((BitmapDrawable)drawable).getBitmap();
}
//Bitmap--->Drawable
public static Drawable bitmapToDrawable(Bitmap bitmap){
return new BitmapDrawable(bitmap);
}
14.设置ListView数据靠下方显示:
android:stackFromBottom="true"
15.取消ListView分割线:
<ListView
android:id="@+id/listview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="@null" >
</ListView>
16.Android 设置界面全屏显示:
<activity
android:name="com.weijie.user.activity.OrderDetailActivity"
android:launchMode="singleTask"
android:configChanges="orientation|keyboardHidden"
android:windowSoftInputMode="stateAlwaysHidden"
android:screenOrientation="portrait"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen">
</activity>
17.Android使用html设置TextView颜色:
this.pic_tip = (TextView) this.findViewById(R.id.pic_tip);
String tipInfo = "(<font color='red'>*</font> 请上传本人手持身份证的近照)";
pic_tip.setText(Html.fromHtml(tipInfo));
18.Android TextView(EditView)文字底部或者中间 加横线
tv = (TextView) this .findViewById(R.id. text_view );
中间加横线
tv.getPaint().setFlags(Paint. STRIKE_THRU_TEXT_FLAG );
底部加横线:
tv .getPaint().setFlags(Paint. UNDERLINE_TEXT_FLAG );
19.取消GridView单击时的黄色背景:
mGridView.setSelector(new ColorDrawable(Color.TRANSPARENT));
20.Android修改背景图片:
ImageView iv = new ImageView(this); iv.setBackgroundResource(R.id.bg);
21.Toast:
Toast.makeText(this, "提醒发货成功!", Toast.LENGTH_LONG).show();
22.刷新当前Activity:
Intent intent = new Intent(currentActivity.this, currentActivity.class);
startActivity(intent);
finish();//结束当前Activiy
23.Android隐藏滚动条:
android:scrollbars="none"
24.Fragment调用Activity中的方法:
((YourActivityClassName)getActivity()).yourPublicMethod();
25.在Adapter中关闭当前Activity:
((OrderCenterActivity)context).finish();
26.Android复制粘贴功能:
API 11之前: android.text.ClipboardManager
API 11之后: android.content.ClipboardManager
/**
* 实现文本复制功能
*
* @param content
*/
public static void copy(String content, Context context) {
// 得到剪贴板管理器
ClipboardManager cmb = (ClipboardManager) context
.getSystemService(Context.CLIPBOARD_SERVICE);
cmb.setText(content.trim());
}
/**
* 实现粘贴功能
*
* @param context
* @return
*/
public static String paste(Context context) {
// 得到剪贴板管理器
ClipboardManager cmb = (ClipboardManager) context
.getSystemService(Context.CLIPBOARD_SERVICE);
return cmb.getText().toString().trim();
}
27.解决Andriod软键盘出现把原来的布局给顶上去的方法
<activity
android:name=".activity.HomeActivity"
android:windowSoftInputMode="adjustPan|stateHidden" />
28.设置EditText是否可编辑:
设置不可编辑状态
editText.setFocusable(false);
editText.setFocusableInTouchMode(false);
设置可编辑状态
editText.setFocusableInTouchMode(true);
editText.setFocusable(true);
editText.requestFocus();
29.带图片的toast:
![]() |
//带图片的toast public static void showToast(Context context, String mes, int resId) { Toast toast = Toast.makeText(context, mes, Toast.LENGTH_SHORT); toast.setGravity(Gravity.CENTER, 0, 0); LinearLayout toastView = (LinearLayout) toast.getView(); ImageView imageCodeProject = new ImageView(context); imageCodeProject.setImageResource(resId); toastView.addView(imageCodeProject, 0); toast.show(); } |
30.Android回到桌面
Intent i = new Intent(Intent.ACTION_MAIN);
i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.addCategory(Intent.CATEGORY_HOME);
startActivity(i);
31.单击dialog之外的地方,可以dismiss掉dialog。
setCanceledOnTouchOutside(true);
32.Android暂停几秒
Timer timer = new Timer();
TimerTask tast = new TimerTask() {
@Override
public void run() {
startActivity(localIntent);
}
};
timer.schedule(tast, 1500);
33.Android实现将drawable转成bitmap:
public static Bitmap drawableToBitmap(Drawable drawable) {
BitmapDrawable bd = (BitmapDrawable) drawable;
Bitmap bm = bd.getBitmap();
return bm;
}
34.popwindow点击外部关闭:
popView = inflater.inflate(R.layout.sort_dialog, null); // 读取布局管理器
popWin = new PopupWindow(popView, LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT,
true);
popWin.setFocusable(true);
popWin.setBackgroundDrawable(new PaintDrawable());
popWin.setOutsideTouchable(true);
35.设置popwindow的显示位置:
popWin.showAsDropDown(findView(R.id.btn_sort),10,10);
//popWin.showAtLocation(findView(R.id.btn_sort), Gravity.TOP|Gravity.RIGHT, 10, 100);
36.TextView单击短暂改变背景色:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@color/yellow" />
<item android:drawable="@color/white" />
</selector>
37.让scrollView滚动到顶部:
在scrollView内部最上面定义一个控件获得焦点,滚动条自然就到顶部去了,如下:
txtBaseMsg.setFocusable(true);
txtBaseMsg.setFocusableInTouchMode(true);
txtBaseMsg.requestFocus();
38.三星手机拍照报错的问题解决:
在activity中添加:android:configChanges="keyboardHidden|orientation|screenSize"
39.获取手机拍摄照片的时间:
String img_date = Utils.DATE_TIME_FORMATER.format(new Date());
try {
ExifInterface exif = new ExifInterface(mDirPath);
String str = exif.getAttribute(ExifInterface.TAG_DATETIME);
String temp[] = str.split(" ");
temp[0] = temp[0].replace(":","-");
img_date = temp[0] + " " + temp[1];
LogUtil.e("img_date:"+img_date);
} catch (Exception ee) {
ee.printStackTrace();
}
40.在listView 中嵌套了 Gridview,然后点击item事件没有反应
首先在listview的item的XML文件的最外层加入
android:descendantFocusability="blocksDscendants"
然后再adapter的java文件中获取gridview
设置
holder.imgGrid.setClickable(false);
holder.imgGrid.setPressed(false);
holder.imgGrid.setEnables(false);