转载请注明出处!本博客地址:http://blog.csdn.net/mylzc
由于Android设备各异,第三方定制的Android系统也非常多,我们不可能对所有的设备场景都进行测试,因而开发一款完全无bug的应用几乎是不可能的任务,那么当应用在用户的设备上Force Close时,我们是不是可以捕获这个错误,记录用户的设备信息,然后让用户选择是否反馈这些堆栈信息,通过这种bug反馈方式,我们可以有针对性地对bug进行修复。
当我们的的应用由于运行时异常导致Force Close的时候,可以设置主线程的UncaughtExceptionHandler,实现捕获运行时异常的堆栈信息。同时用户可以把堆栈信息通过发送邮件的方式反馈给我们。下面是实现的代码:
例子:点击按钮后,会触发一个NullPointerException的运行时异常,这个例子实现了捕获运行时异常,发送邮件反馈设备和堆栈信息的功能。
界面1(触发运行时异常)
界面2(发送堆栈信息)
TestActivity.java
- package com.zhuozhuo;
- import java.io.PrintWriter;
- import java.io.StringWriter;
- import java.lang.Thread.UncaughtExceptionHandler;
- import android.app.Activity;
- import android.content.Intent;
- import android.net.Uri;
- import android.os.Build;
- import android.os.Bundle;
- import android.util.Log;
- import android.view.View;
- import android.view.View.OnClickListener;
- import android.widget.EditText;
- import android.widget.TextView;
- publicclass TestActivity extends Activity {
- /** Called when the activity is first created. */
- @Override
- publicvoid onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.main);
- Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler() {//给主线程设置一个处理运行时异常的handler
- @Override
- publicvoid uncaughtException(Thread thread, final Throwable ex) {
- StringWriter sw = new StringWriter();
- PrintWriter pw = new PrintWriter(sw);
- ex.printStackTrace(pw);
- StringBuilder sb = new StringBuilder();
- sb.append("Version code is ");
- sb.append(Build.VERSION.SDK_INT + "\n");//设备的Android版本号
- sb.append("Model is ");
- sb.append(Build.MODEL+"\n");//设备型号
- sb.append(sw.toString());
- Intent sendIntent = new Intent(Intent.ACTION_SENDTO);
- sendIntent.setData(Uri.parse("mailto:csdn@csdn.com"));//发送邮件异常到csdn@csdn.com邮箱
- sendIntent.putExtra(Intent.EXTRA_SUBJECT, "bug report");//邮件主题
- sendIntent.putExtra(Intent.EXTRA_TEXT, sb.toString());//堆栈信息
- startActivity(sendIntent);
- finish();
- }
- });
- findViewById(R.id.button).setOnClickListener(new OnClickListener() {
- @Override
- publicvoid onClick(View v) {
- Integer a = null;
- a.toString();//触发nullpointer运行时错误
- }
- });
- }
- }
package com.zhuozhuo; import java.io.PrintWriter; import java.io.StringWriter; import java.lang.Thread.UncaughtExceptionHandler; import android.app.Activity; import android.content.Intent; import android.net.Uri; import android.os.Build; import android.os.Bundle; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.EditText; import android.widget.TextView; public class TestActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Thread.setDefaultUncaughtExceptionHandler(new UncaughtExceptionHandler() {//给主线程设置一个处理运行时异常的handler @Override public void uncaughtException(Thread thread, final Throwable ex) { StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); ex.printStackTrace(pw); StringBuilder sb = new StringBuilder(); sb.append("Version code is "); sb.append(Build.VERSION.SDK_INT + "\n");//设备的Android版本号 sb.append("Model is "); sb.append(Build.MODEL+"\n");//设备型号 sb.append(sw.toString()); Intent sendIntent = new Intent(Intent.ACTION_SENDTO); sendIntent.setData(Uri.parse("mailto:csdn@csdn.com"));//发送邮件异常到csdn@csdn.com邮箱 sendIntent.putExtra(Intent.EXTRA_SUBJECT, "bug report");//邮件主题 sendIntent.putExtra(Intent.EXTRA_TEXT, sb.toString());//堆栈信息 startActivity(sendIntent); finish(); } }); findViewById(R.id.button).setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { Integer a = null; a.toString();//触发nullpointer运行时错误 } }); } }
main.xml
- <?xmlversion="1.0"encoding="utf-8"?>
- <LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
- android:orientation="vertical"android:layout_width="fill_parent"
- android:layout_height="fill_parent">
- <TextViewandroid:layout_width="fill_parent"
- android:layout_height="wrap_content"android:text="@string/hello"/>
- <EditTextandroid:id="@+id/editText1"android:layout_width="match_parent"
- android:text="点击按钮触发运行时异常"android:layout_height="wrap_content"
- android:layout_weight="1"android:gravity="top"></EditText>
- <Buttonandroid:text="按钮"android:id="@+id/button"
- android:layout_width="wrap_content"android:layout_height="wrap_content"
- android:layout_gravity="center_horizontal"></Button>
- </LinearLayout>
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <EditText android:id="@+id/editText1" android:layout_width="match_parent" android:text="点击按钮触发运行时异常" android:layout_height="wrap_content" android:layout_weight="1" android:gravity="top"></EditText> <Button android:text="按钮" android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal"></Button> </LinearLayout>
转载请注明出处!本博客地址:http://blog.csdn.net/mylzc