# 给未签名的安装包签名
jarsigner -verbose -keystore keystore文件名称 -signedjar 签名后的文件.apk 空白文件.apk keystore别名
# 隐藏标题栏
在setContentView之前增加 requestWindowFeature(Window.FEATURE_NO_TITLE);
# 打开网页和拨打电话
都是Intent的操作
``` bash
Intent intent= new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("http://www.baidu.com"));
startActivity(intent);
```
``` bash
Intent intent = new Intent(Intent.ACTION_DIAL); //拨号界面
intent.setData(Uri.parse("tel:10086"));
startActivity(intent);
```
``` bash
Intent intent = new Intent(Intent.ACTION_CALL); //直接拨打
intent.setData(Uri.parse("tel:10086"));
startActivity(intent);
```
# ProgressBar
设置成横向，满值是100
``` bash
<ProgressBar
android:id="@+id/progress_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
style="?android:attr/progressBarStyleHorizontal"
android:max="100" />
```
``` bash
int progress = progressBar.getProgress();
progress = progress + 1;
progressBar.setProgress(progress);
```
# AlertDialog
``` bash
AlertDialog.Builder dialog = new AlertDialog.Builder(XXXX.this);
dialog.setTitle("这是Title");
dialog.setMessage("这是Message");
dialog.setCancelable(false); //返回键
dialog.setPositiveButton("确定",new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterface dialog,int which){
}
});
dialog.setNegativeButton("取消",new DialogInterface.OnClickListener(){
@Override
public void onClick(DialogInterfacedialog,intwhich){
}
});
dialog.show();
```
# shape设置背景
``` bash
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
<!-- 圆角 -->
<corners
android:radius="9dp"
android:topLeftRadius="2dp"
android:topRightRadius="2dp"
android:bottomLeftRadius="2dp"
android:bottomRightRadius="2dp"/><!-- 设置圆角半径 -->
<!-- 渐变 -->
<gradient
android:startColor="@android:color/white"
android:centerColor="@android:color/black"
android:endColor="@android:color/black"
android:useLevel="true"
android:angle="45"
android:type="radial"
android:centerX="0"
android:centerY="0"
android:gradientRadius="90"/>
<!-- 间隔 -->
<padding
android:left="2dp"
android:top="2dp"
android:right="2dp"
android:bottom="2dp"/><!-- 各方向的间隔 -->
<!-- 大小 -->
<size
android:width="50dp"
android:height="50dp"/><!-- 宽度和高度 -->
<!-- 填充 -->
<solid
android:color="@android:color/white"/><!-- 填充的颜色 -->
<!-- 描边 -->
<stroke
android:width="2dp"
android:color="@android:color/black"
android:dashWidth="1dp"
android:dashGap="2dp"/>
</shape>
```
