【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 }