Android事件小结

1、基本事件

ACTION_DOWN

ACTION_MOVE

ACTION_UP

和

Event Source

Event

Event Listener

2、事件类型

基于监听

基于回调

3、三个函数

public boolean dispatchTouchEvent(MotionEvent ev)

public boolean onInterceptTouchEvent(MotionEvent ev)//View没有此方法

public boolean onTouchEvent(MotionEvent event)

4、布局结构

View

FrameLayout ViewGroup

            LinearLayout RelativeLayout AbsoluteLayout

            TableLayout

5、顺序

Activity->ViewGroup->View//只有此三类可处理事件

6、模拟事件

adb shell

su

getevent

sendevent

input keyevent 3

input text "hi"

input tap 100 200

input swipe 100 200 300 200

执行命令

private void execCmd(String cmd) {

        OutputStream os = null;

        DataOutputStream dos = null;

        try {

            Process process = Runtime.getRuntime().exec("su");

            os = process.getOutputStream();

            dos = new DataOutputStream(os);

            dos.writeBytes(cmd);

            dos.flush();

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

            try {

                if (dos != null)

                    dos.close();

                if (os != null)

                    os.close();

            } catch (IOException e) {

                e.printStackTrace();

            }

        }

    }

/**

* github的开源类

*/

package com.study.eventstudy;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;

/**
* ShellUtils
* <ul>
* <strong>Check root</strong>
* <li>{@link ShellUtils#checkRootPermission()}</li>
* </ul>
* <ul>
* <strong>Execte command</strong>
* <li>{@link ShellUtils#execCommand(String, boolean)}</li>
* <li>{@link ShellUtils#execCommand(String, boolean, boolean)}</li>
* <li>{@link ShellUtils#execCommand(List, boolean)}</li>
* <li>{@link ShellUtils#execCommand(List, boolean, boolean)}</li>
* <li>{@link ShellUtils#execCommand(String[], boolean)}</li>
* <li>{@link ShellUtils#execCommand(String[], boolean, boolean)}</li>
* </ul>
*
* @author <a href="http://www.trinea.cn" target="_blank">Trinea</a> 2013-5-16
*/
public class ShellUtils {
public static final String COMMAND_SU = "su";
public static final String COMMAND_SH = "sh";
public static final String COMMAND_EXIT = "exit\n";
public static final String COMMAND_LINE_END = "\n";

private ShellUtils() {
throw new AssertionError();
}

/**
* check whether has root permission
*
* @return
*/
public static boolean checkRootPermission() {
return execCommand("echo root", true, false).result == 0;
}

/**
* execute shell command, default return result msg
*
* @param command command
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String command, boolean isRoot) {
return execCommand(new String[]{command}, isRoot, true);
}

/**
* execute shell commands, default return result msg
*
* @param commands command list
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(List<String> commands, boolean isRoot) {
return execCommand(commands == null ? null : commands.toArray(new String[]{}), isRoot, true);
}

/**
* execute shell commands, default return result msg
*
* @param commands command array
* @param isRoot whether need to run with root
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String[] commands, boolean isRoot) {
return execCommand(commands, isRoot, true);
}

/**
* execute shell command
*
* @param command command
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(String command, boolean isRoot, boolean isNeedResultMsg) {
return execCommand(new String[]{command}, isRoot, isNeedResultMsg);
}

/**
* execute shell commands
*
* @param commands command list
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return
* @see ShellUtils#execCommand(String[], boolean, boolean)
*/
public static CommandResult execCommand(List<String> commands, boolean isRoot, boolean isNeedResultMsg) {
return execCommand(commands == null ? null : commands.toArray(new String[]{}), isRoot, isNeedResultMsg);
}

/**
* execute shell commands
*
* @param commands command array
* @param isRoot whether need to run with root
* @param isNeedResultMsg whether need result msg
* @return <ul>
* <li>if isNeedResultMsg is false, {@link CommandResult#successMsg} is null and
* {@link CommandResult#errorMsg} is null.</li>
* <li>if {@link CommandResult#result} is -1, there maybe some excepiton.</li>
* </ul>
*/
public static CommandResult execCommand(String[] commands, boolean isRoot, boolean isNeedResultMsg) {
int result = -1;
if (commands == null || commands.length == 0) {
return new CommandResult(result, null, null);
}

Process process = null;
BufferedReader successResult = null;
BufferedReader errorResult = null;
StringBuilder successMsg = null;
StringBuilder errorMsg = null;

DataOutputStream os = null;
try {
process = Runtime.getRuntime().exec(isRoot ? COMMAND_SU : COMMAND_SH);
os = new DataOutputStream(process.getOutputStream());
for (String command : commands) {
if (command == null) {
continue;
}

// donnot use os.writeBytes(commmand), avoid chinese charset error
os.write(command.getBytes());
os.writeBytes(COMMAND_LINE_END);
os.flush();
}
os.writeBytes(COMMAND_EXIT);
os.flush();

result = process.waitFor();
// get command result
if (isNeedResultMsg) {
successMsg = new StringBuilder();
errorMsg = new StringBuilder();
successResult = new BufferedReader(new InputStreamReader(process.getInputStream()));
errorResult = new BufferedReader(new InputStreamReader(process.getErrorStream()));
String s;
while ((s = successResult.readLine()) != null) {
successMsg.append(s);
}
while ((s = errorResult.readLine()) != null) {
errorMsg.append(s);
}
}
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (os != null) {
os.close();
}
if (successResult != null) {
successResult.close();
}
if (errorResult != null) {
errorResult.close();
}
} catch (IOException e) {
e.printStackTrace();
}

if (process != null) {
process.destroy();
}
}
return new CommandResult(result, successMsg == null ? null : successMsg.toString(), errorMsg == null ? null
: errorMsg.toString());
}

/**
* result of command
* <ul>
* <li>{@link CommandResult#result} means result of command, 0 means normal, else means error, same to excute in
* linux shell</li>
* <li>{@link CommandResult#successMsg} means success message of command result</li>
* <li>{@link CommandResult#errorMsg} means error message of command result</li>
* </ul>
*
* @author <a href="http://www.trinea.cn" target="_blank">Trinea</a> 2013-5-16
*/
public static class CommandResult {

/**
* result of command
**/
public int result;
/**
* success message of command result
**/
public String successMsg;
/**
* error message of command result
**/
public String errorMsg;

public CommandResult(int result) {
this.result = result;
}

public CommandResult(int result, String successMsg, String errorMsg) {
this.result = result;
this.successMsg = successMsg;
this.errorMsg = errorMsg;
}
}
}