智者不为愚者谋，勇者不为怯者死。这篇文章主要讲述Android：自定义BaseActivity基类相关的知识，希望能为你提供帮助。
使用BaseActivity可以封装一些重复代码例如设置标题栏颜色，封装一些工具类...新建一个BaseActivity继承自Activity
主要功能：
- 封装Toast
package com.onepilltest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.EditText;
import android.widget.Toast;
import com.onepilltest.util.KeyboardUtils;
import com.onepilltest.util.StatusBarUtil;
/**
* 封装Activity用于管理所有Activity
*/public abstract class BaseActivity extends Activity {/***是否显示标题栏*/
privateboolean isshowtitle = true;
/***是否显示标题栏*/
privateboolean isshowstate = true;
/***封装toast对象**/
private static Toast toast;
/***获取TAG的activity名称**/
protected final String TAG = this.getClass().getSimpleName();
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(intiLayout());
//初始化状态栏
{
//当FitsSystemWindows设置 true 时，会在屏幕最上方预留出状态栏高度的 padding
StatusBarUtil.setRootViewFitsSystemWindows(this,true);
//设置状态栏透明
StatusBarUtil.setTranslucentStatus(this);
//一般的手机的状态栏文字和图标都是白色的, 可如果你的应用也是纯白色的, 或导致状态栏文字看不清
//所以如果你是这种情况,请使用以下代码, 设置状态使用深色文字图标风格, 否则你可以选择性注释掉这个if内容
if (!StatusBarUtil.setStatusBarDarkTheme(this, true)) {
//如果不支持设置深色风格 为了兼容总不能让状态栏白白的看不清, 于是设置一个状态栏颜色为半透明,
//这样半透明+白=灰, 状态栏的文字能看得清
StatusBarUtil.setStatusBarColor(this,0x55000000);
}
}
//初始化控件
initView();
//设置数据
initData();
}/**
* 设置布局
*
* @return
*/
public abstract int intiLayout();
/**
* 初始化布局
*/
public abstract void initView();
/**
* 设置数据
*/
public abstract void initData();
public static String Help(){
String str = "
-->
"
;
str += "
丨------------------------------
"
;
str += "
丨设置屏幕横竖屏切换:setScreenRoate(Boolean screenRoate) true竖屏false横屏"
+"
"
;
str += "
丨显示长toast:toastLong(String msg) String msg"
+"
"
;
str += "
丨显示短toast:toastShort(String msg)"
+"
"
;
str += "
丨页面跳转:startActivity(Class<
?>
clz)"
+"
"
;
str += "
丨携带数据的页面跳转:startActivity(Class<
?>
clz, Bundle bundle)"
+"
"
;
str += "
丨* * *设置EditView和Activity的互动* * *"
+"
"
;
str += "
丨传入EditText的Id:重写hideSoftByEditViewIds()"
+"
"
;
str += "
丨传入要过滤的View:filterViewByIds()"
+"
"
;
str += "
丨* * * * * * * * * * * * * * * * * * *"
+"
"
;
str += "
丨-----------------------------
"
;
Log.e("
BaseActivity_Help"
,str);
return str;
}/**
* 设置屏幕横竖屏切换
* @param screenRoate true竖屏false横屏
*/
private void setScreenRoate(Boolean screenRoate) {
if (screenRoate) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
//设置竖屏模式
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
}/**
* 显示长toast
* @param msg
*/
public void toastLong(String msg){
if (null == toast) {
toast = new Toast(this);
toast.setDuration(Toast.LENGTH_LONG);
toast.setText(msg);
toast.show();
} else {
toast.setText(msg);
toast.show();
}
}/**
* 显示短toast
* @param msg
*/
public void toastShort(String msg){
if (null == toast) {
toast = new Toast(this);
toast.setDuration(Toast.LENGTH_SHORT);
toast.setText(msg);
toast.show();
} else {
toast.setText(msg);
toast.show();
}
}/**
* [页面跳转]
* @param clz
*/
public void startActivity(Class<
?>
clz) {
startActivity(clz, null);
}/**
* [携带数据的页面跳转]
*
* @param clz
* @param bundle
*/
public void startActivity(Class<
?>
clz, Bundle bundle) {
Intent intent = new Intent();
intent.setClass(this, clz);
if (bundle != null) {
intent.putExtras(bundle);
}
startActivity(intent);
}/**
* [含有Bundle通过Class打开编辑界面]
*
* @param cls
* @param bundle
* @param requestCode
*/
public void startActivityForResult(Class<
?>
cls, Bundle bundle, int requestCode) {
Intent intent = new Intent();
intent.setClass(this, cls);
if (bundle != null) {
intent.putExtras(bundle);
}
startActivityForResult(intent, requestCode);
}/**
* 以下是关于软键盘的处理
*//**
* 清除editText的焦点
*
* @param v焦点所在View
* @param ids 输入框
*/
public void clearViewFocus(View v, int... ids) {
if (null != v &
&
null != ids &
&
ids.length >
0) {
for (int id : ids) {
if (v.getId() == id) {
v.clearFocus();
break;
}
}
}
}/**
* 隐藏键盘
*
* @param v焦点所在View
* @param ids 输入框
* @return true代表焦点在edit上
*/
public boolean isFocusEditText(View v, int... ids) {
if (v instanceof EditText) {
EditText et = (EditText) v;
for (int id : ids) {
if (et.getId() == id) {
return true;
}
}
}
return false;
}//是否触摸在指定view上面,对某个控件过滤
public boolean isTouchView(View[] views, MotionEvent ev) {
if (views == null || views.length == 0) {
return false;
}
int[] location = new int[2];
for (View view : views) {
view.getLocationOnScreen(location);
int x = location[0];
int y = location[1];
if (ev.getX() >
x &
&
ev.getX() <
(x + view.getWidth())
&
&
ev.getY() >
y &
&
ev.getY() <
(y + view.getHeight())) {
return true;
}
}
return false;
}@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
if (isTouchView(filterViewByIds(), ev)) {
return super.dispatchTouchEvent(ev);
}
if (hideSoftByEditViewIds() == null || hideSoftByEditViewIds().length == 0) {
return super.dispatchTouchEvent(ev);
}
View v = getCurrentFocus();
if (isFocusEditText(v, hideSoftByEditViewIds())) {
KeyboardUtils.hideInputForce(this);
clearViewFocus(v, hideSoftByEditViewIds());
}
}
return super.dispatchTouchEvent(ev);
}/**
* 传入EditText的Id
* 没有传入的EditText不做处理
*
* @return id 数组
*/
public int[] hideSoftByEditViewIds() {
return null;
}/**
* 传入要过滤的View
* 过滤之后点击将不会有隐藏软键盘的操作
*
* @return id 数组
*/
public View[] filterViewByIds() {
return null;
}/*实现案例===============================================================================================*///@Override
//public int[] hideSoftByEditViewIds() {
//int[] ids = {R.id.et_company_name, R.id.et_address};
//return ids;
//}
//
//@Override
//public View[] filterViewByIds() {
//View[] views = {mEtCompanyName, mEtAddress};
//return views;
//}}工具类KeyboardUtils
package com.onepilltest.util;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
import com.onepilltest.BaseActivity;
import com.onepilltest.R;
import static android.content.Context.INPUT_METHOD_SERVICE;
/**
* @author sunyaxi
* @date 2016/11/17.
*/
public class KeyboardUtils {/**
* 动态隐藏软键盘
*/
public static void hideSoftInput(Activity activity) {
View view = activity.getWindow().peekDecorView();
if (view != null) {
InputMethodManager inputManger = (InputMethodManager) activity
.getSystemService(INPUT_METHOD_SERVICE);
inputManger.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
}/**
* 动态隐藏软键盘
*/
public static void hideSoftInput(Context context, View view) {
view.clearFocus();
InputMethodManager inputManger = (InputMethodManager) context
.getSystemService(INPUT_METHOD_SERVICE);
inputManger.hideSoftInputFromWindow(view.getWindowToken(), 0);
}/**
* 动态显示软键盘
*/
public static void showSoftInput(Context context, EditText edit) {
edit.setFocusable(true);
edit.setFocusableInTouchMode(true);
edit.requestFocus();
InputMethodManager inputManager = (InputMethodManager) context
.getSystemService(INPUT_METHOD_SERVICE);
inputManager.showSoftInput(edit, 0);
}/**
* 切换键盘显示与否状态
*/
public static void toggleSoftInput(Context context, EditText edit) {
edit.setFocusable(true);
edit.setFocusableInTouchMode(true);
edit.requestFocus();
InputMethodManager inputManager = (InputMethodManager) context
.getSystemService(INPUT_METHOD_SERVICE);
inputManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
}/**
* 点击屏幕空白区域隐藏软键盘（方法1）
* 在onTouch中处理，未获焦点则隐藏
* 参照以下注释代码
*/
public static void clickBlankArea2HideSoftInput0() {
Log.i("
tips"
, "
U should copy the following code."
);
/*
@Override
public boolean onTouchEvent (MotionEvent event){
if (null != this.getCurrentFocus()) {
InputMethodManager mInputMethodManager = (InputMethodManager) getSystemService(INPUT_METHOD_SERVICE);
return mInputMethodManager.hideSoftInputFromWindow(this.getCurrentFocus().getWindowToken(), 0);
}
return super.onTouchEvent(event);
}
*/
}/**
* 点击屏幕空白区域隐藏软键盘（方法2）
* 根据EditText所在坐标和用户点击的坐标相对比，来判断是否隐藏键盘
* 需重写dispatchTouchEvent
* 参照以下注释代码
*/
public static void clickBlankArea2HideSoftInput1() {
Log.i("
tips"
, "
U should copy the following code."
);
/*
@Override
public boolean dispatchTouchEvent(MotionEvent ev) {
if (ev.getAction() == MotionEvent.ACTION_DOWN) {
View v = getCurrentFocus();
if (isShouldHideKeyboard(v, ev)) {
hideKeyboard(v.getWindowToken());
}
}
return super.dispatchTouchEvent(ev);
}
// 根据EditText所在坐标和用户点击的坐标相对比，来判断是否隐藏键盘
private boolean isShouldHideKeyboard(View v, MotionEvent event) {
if (v != null &
&
(v instanceof EditText)) {
int[] l = {0, 0};
v.getLocationInWindow(l);
int left = l[0],
top = l[1],
bottom = top + v.getHeight(),
right = left + v.getWidth();
return !(event.getX() >
left &
&
event.getX() <
right
&
&
event.getY() >
top &
&
event.getY() <
bottom);
}
return false;
}
// 获取InputMethodManager，隐藏软键盘
private void hideKeyboard(IBinder token) {
if (token != null) {
InputMethodManager im = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
im.hideSoftInputFromWindow(token, InputMethodManager.HIDE_NOT_ALWAYS);
}
}
*/
}/**
* des:隐藏软键盘,这种方式参数为activity
*
* @param activity
*/
public static void hideInputForce(Activity activity) {
if (activity == null || activity.getCurrentFocus() == null)
return;
((InputMethodManager) activity.getSystemService(INPUT_METHOD_SERVICE))
.hideSoftInputFromWindow(activity.getCurrentFocus()
.getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
}
}
将自己的Activity继承BaseActivity
【Android（自定义BaseActivity基类）】
public class SettingActivity extends BaseActivity {推荐阅读
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