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singleTop模式下，当Activity处于栈顶时，再跳转到自己时，不会重新创建Activity，会调用onNewIntent()方法。standard模式下，当Activity处于栈顶时，再跳转到自己时，会重新创建一个Activity，调用onCreate()方法。查看全部
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在配置文件中给Activity 添加launchMode属性，设置Activity启动模式查看全部
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Activity的启动模式查看全部
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查看任务栈曾经运行过的程序查看全部
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adb shell dumpsys activity 查看Activity任务栈的命令查看全部
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adb shell dumpsys activity 查看查看全部
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在配置文件中给Activity设置process属性，可以使其打开在另一个进程中，虽然进程不同，但是在同一个Task（任务栈）中 getTaskId()得到本Activity所在任务（栈）的id查看全部
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Activity的Task和启动模式查看全部
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传递Bitmap对象<br> Intent intent = new Intent(---,---);<br> Bundle bundle = new Bundle();<br> Bitmap bitmap = BitampFactory.decodeResource(getResoruces(),R.drawable.ic_launch);<br> bundler.putParcelable("bitmap",btimap);<br> intent.putExtras(bundle);<br> startActivity(intent);<br> 接收数据 Intent intent=getIntent(); if(intent!=null){ Bitmap bitmap=intent.getParcelableExtra("bitmap"); imageView.setImageBitmap(bitmap); }查看全部
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==对数据进行封装，传递Java Bean对象===<br> >>1:写一个Person类并实现接口Serializable（）序列化类<br> private int age;<br> private String name;<br> private String address;<br> public Person(int age, String name, String address){<br> this.age = age;<br> this.address = address;<br> this.name = name;<br> }<br> public String toString() {<br> return "[name = "+name +"aget = "+age+ "address = "+address+"]";<br> }<br> <br> >>2:ThreeActivity--> onCreate put <br> Intent intent = new Intent(ThreeActivity.this, FourActivity.class);<br> Person person = new Person(1, "ailer", "plws");<br> Bundle bundle = new Bundle();<br> bundle.putSerializable("person", person);<br> intent.putExtras(bundle);<br> startActivity(intent);<br> <br> >>3:In FourActivity-->onCreate put<br> private TextView textView;<br> textView = (TextView)findViewById(R.id.textView);<br> Intent intent = getIntent();<br> if(intent !=null )<br> {<br> Person person = (Person)intent.getSerializableExtra("person");<br> textView.setText(person.toString());<br> }查看全部
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通过bundle进行数据传递<br> Intent intent = new Intent(---,---);<br> Bundle bundle = new Bundle();<br> bundle.putString("name","nate");<br> bundle.putInt("age",23);<br> intent.putExtras(bundle);<br> startActivity(intent);<br>查看全部
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传递简单的数据<br> ThreeActivity 传递数据<br> <br> Intent intent = new Intent(ThreeActivity.this,FourActivity.class);<br> intent.putExtra("name","nate");<br> intent.putExtra("age",23);<br> startActivity(intent);<br> <br> FourActivity 接收数据 Intent intent=getIntent(); if(intent!=null){ String name = intent.getStringExtra("name"); int age=intent.getIntExtra("age",0); }查看全部
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===========对于稍微多一点的数据进行封装================ >>1:写一个Person类并实现接口Serializable（）序列化类 private int age; private String name; private String address; public Person(int age, String name, String address){ this.age = age; this.address = address; this.name = name; } public String toString() { return "[name = "+name +"aget = "+age+ "address = "+address+"]"; } >>2:ThreeActivity--> onCreate put Intent intent = new Intent(ThreeActivity.this, FourActivity.class); Person person = new Person(1, "ailer", "plws"); Bundle bundle = new Bundle(); bundle.putSerializable("person", person); intent.putExtras(bundle); startActivity(intent); >>3:In FourActivity-->onCreate put private TextView textView; textView = (TextView)findViewById(R.id.textView); Intent intent = getIntent(); if(intent !=0 ) { Person person = (Person)inten.getSerializableExtra("person"); textView.setText(person.toString()); }查看全部
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====利用Activity数据交互一定程度控制了数据的产生 >>1:ThreeActivity--> onCreate put Intent intent = new Intent(ThreeActivity.this, FourActivity.class); intent.putExtra("name", "ailer")' intent.putExtra("age", 19); startActivity(intent); 或者利用bundle Intent intent = new Intent(ThreeActivity.this, FourActivity.class); Bundle bundle = new Bundle(); bundle.putString("name", "ailer"); bundle.putInt("age", 18); intent.putExtras(bundle); startActivity(intent); >>2:In FourActivity-->onCreate put private TextView textView; textView = (TextView)findViewById(R.id.textView); Intent intent = getIntent(); if(intent !=0 ) { String name = intent.getStringExtra("name"); int age = intent.getIntExtra("age",0); textView.setView("name = "+name+ " age = "+age); }查看全部
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bundle传递数据不能太大查看全部
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