【工具类】如何通过代码安装一个apk文件

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="fill_parent"
 4     android:layout_height="fill_parent"
 5     android:orientation="vertical" >
 6     <TextView
 7         android:layout_width="fill_parent"
 8         android:layout_height="wrap_content"
 9         android:text="@string/hello" />
10     <EditText
11         android:id="@+id/et_path"
12         android:layout_width="match_parent"
13         android:layout_height="wrap_content"
14         android:text="/sdcard/queryAddress.apk" />
15     <Button
16         android:id="@+id/button1"
17         android:layout_width="wrap_content"
18         android:layout_height="wrap_content"
19         android:onClick="install"
20         android:text="安装" />
21 </LinearLayout>

 1 import java.io.File;
 2 import android.app.Activity;
 3 import android.content.Intent;
 4 import android.net.Uri;
 5 import android.os.Bundle;
 6 import android.view.View;
 7 import android.widget.EditText;
 8 
 9 public class DemoActivity extends Activity {
10     private EditText et_path;
11 
12     @Override
13     public void onCreate(Bundle savedInstanceState) {
14         super.onCreate(savedInstanceState);
15         setContentView(R.layout.main);
16         et_path = (EditText) this.findViewById(R.id.et_path);
17     }
18 
19     public void install(View view) {
20         String path = et_path.getText().toString().trim();
21 
22         Intent intent = new Intent();
23         intent.setAction(Intent.ACTION_VIEW);
24         // intent.setData(Uri.fromFile(new File(path)));
25         // intent.setType("application/vnd.android.package-archive");
26         intent.setDataAndType(Uri.fromFile(new File(path)),
27                 "application/vnd.android.package-archive");
28         startActivity(intent);
29     }
30 }