总结安卓(Android)中常用的跳转工具

<uses-permission android:name="android.permission.call_phone" />
<uses-permission android:name="android.permission.send_sms" />
<uses-permission android:name="android.permission.read_external_storage" />

import android.app.activity;
import android.content.context;
import android.content.intent;
import android.database.cursor;
import android.net.uri;
import android.os.environment;
import android.provider.mediastore;
import android.provider.settings;
import android.support.v7.app.appcompatactivity;
import android.os.bundle;
import android.view.view;
import android.widget.toast;
 
import java.io.file;
 
import frame.zmit.cn.publicutils.r;
 
/**
 * created by joy on 2016/7/21.
 * 工具集合
 */
public class mainactivity extends appcompatactivity {
 private string mimagepath;//返回的图片路径
 private final static int request_code_gallery = 0x11;
 private final static int request_code_camera = 0x12;
 
 @override
 protected void oncreate(bundle savedinstancestate) {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_main);
 /**
 * 打开微信
 */
 findviewbyid(r.id.btn_open_weixin).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 intent intent = getpackagemanager().getlaunchintentforpackage("com.tencent.mm");
 startactivity(intent);
 }
 });
 /**
 * 跳转到qq聊天界面
 */
 findviewbyid(r.id.btn_open_qq).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 string mqqnumber = "98*****08";
 string url11 = "mqqwpa://im/chat?chat_type=wpa&uin=" + mqqnumber + "&version=10";
 startactivity(new intent(intent.action_view, uri.parse(url11)));
 }
 });
 /**
 * 跳转到联系人界面
 */
 findviewbyid(r.id.btn_people_interface).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 intent intent = new intent();
 intent.setclassname("com.android.contacts", "com.android.contacts.activities.peopleactivity");
 startactivity(intent);
 }
 });
 /**
 * 跳转到拨号界面
 */
 findviewbyid(r.id.btn_telephone_interface).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 string phone = "157*****737";
 intent intent = new intent(intent.action_dial, uri.parse("tel:" + phone));
 intent.setflags(intent.flag_activity_new_task);
 startactivity(intent);
 }
 });
 /**
 * 直接拨打电话
 */
 findviewbyid(r.id.btn_telephone).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 string phone = "157*****737";
 intent intentphone = new intent(intent.action_call, uri.parse("tel:" + phone));
 startactivity(intentphone);
 }
 });
 /**
 * 跳转到短信界面
 */
 findviewbyid(r.id.btn_message_interface).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 intent intent = new intent(intent.action_view);
 intent.settype("vnd.android-dir/mms-sms");
 startactivity(intent);
 }
 });
 /**
 * 跳转到短信界面
 * 指定号码和短信内容
 */
 findviewbyid(r.id.btn_message).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 string phone = "157*****737";
 string message = "这是一个自定义的内容";
 intent intent = new intent(intent.action_sendto, uri.parse("smsto:" + phone));
 intent.putextra("sms_body", message);
 startactivity(intent);
 }
 });
 /**
 * 跳转到设置界面
 */
 findviewbyid(r.id.btn_setting_interface).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 intent intent = new intent(settings.action_settings);
 startactivity(intent);
 }
 });
 /**
 * 跳转到蓝牙界面
 */
 findviewbyid(r.id.btn_bluetooth_interface).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 intent intent = new intent(settings.action_bluetooth_settings);
 startactivity(intent);
 }
 });
 /**
 * 调用浏览器
 */
 findviewbyid(r.id.btn_browser).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 intent intent = new intent();
 intent.setaction("android.intent.action.view");
 uri content_url = uri.parse("http://www.baidu.com");
 intent.setdata(content_url);
 startactivity(intent);
 }
 });
 /**
 * 打开照相机
 */
 findviewbyid(r.id.btn_camera).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 mimagepath = chooseimagefromcamera(mainactivity.this, request_code_camera, "cameraimage");
 }
 });
 /**
 * 打开相册并获取图片地址
 */
 findviewbyid(r.id.btn_gallery).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 intent intent = new intent(intent.action_pick, null);
 intent.setdataandtype(mediastore.images.media.external_content_uri, "image/*");
 startactivityforresult(intent, request_code_gallery);
 }
 });
 }
 
 public string chooseimagefromcamera(activity activity, int requestcode, string imagename) {
 intent cameraintent = new intent(android.provider.mediastore.action_image_capture);
 file file = new file(environment.getexternalstoragedirectory() + "/images");
 if (!file.exists()) {
 file.mkdirs();
 }
 string savepath = environment.getexternalstoragedirectory() + "/images/" + imagename + string.valueof(system.currenttimemillis()) + ".jpg";
 uri muri = uri.fromfile(
 new file(savepath));
 cameraintent.putextra(android.provider.mediastore.extra_output, muri);
 cameraintent.putextra("return-data", true);
 activity.startactivityforresult(cameraintent, requestcode);
 return savepath;
 }
 
 public string onactivityresultforchooseimagefromgallery(
 context context, int requestcode, int resultcode, intent data) {
 string imagepath = null;
 if (data != null) {
 if ("file".equals(data.getdata().getscheme())) {
 /** 有些低版本机型返回的uri模式为file*/
 imagepath = data.getdata().getpath();
 } else {
 uri selectedimage = data.getdata();
 string[] filepathcolumn = {mediastore.images.media.data};
 
 cursor cursor = context.getcontentresolver().query(selectedimage,
 filepathcolumn, null, null, null);
 cursor.movetofirst();
 
 int columnindex = cursor.getcolumnindex(filepathcolumn[0]);
 imagepath = cursor.getstring(columnindex);
 cursor.close();
 }
 return imagepath;
 } else {
 return null;
 }
 
 }
 
 @override
 protected void onactivityresult(int requestcode, int resultcode, intent data) {
 super.onactivityresult(requestcode, resultcode, data);
 switch (requestcode) {
 case request_code_gallery:
 mimagepath = onactivityresultforchooseimagefromgallery(mainactivity.this,
 requestcode, resultcode, data);
 if (mimagepath != null && mimagepath.length() > 0) {
 toast.maketext(mainactivity.this, mimagepath, toast.length_short).show();
 }
 break;
 case request_code_camera:
 if (mimagepath != null && mimagepath.length() > 0) {
 toast.maketext(mainactivity.this, mimagepath, toast.length_short).show();
 }
 break;
 }
 }
}