hpapi.blogspot.jp

2017年7月31日月曜日

Android SoundPool soundPool

public class MainActivity extends AppCompatActivity {
protected SoundPool soundPool;
protected int id;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
test();

AssetManager am = getAssets();
try {
id = soundPool.load(am.openFd("PCM-M10_441kHz16bit.wav"), 1);
} catch (IOException e) {
e.printStackTrace();
}

soundPool.setOnLoadCompleteListener(new SoundPool.OnLoadCompleteListener() {
@Override
public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
Toast.makeText(MainActivity.this, "9999999999999", Toast.LENGTH_SHORT).show();
soundPool.play(id, 1, 1, 1, 1, 1);
}
});
}

protected void test() {
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
SoundPool.Builder spb = new SoundPool.Builder();
AudioAttributes.Builder b = new AudioAttributes.Builder();
b.setUsage(AudioAttributes.USAGE_MEDIA);
b.setContentType(AudioAttributes.CONTENT_TYPE_MUSIC);
AudioAttributes a = b.build();
spb.setAudioAttributes(a);
spb.setMaxStreams(12);
soundPool = spb.build();
}
}
}

2017年6月28日水曜日

android app中如何获取电源锁保持屏幕常亮

protected void screen_on() {

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

}

protected void screen_off() {

getWindow().clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

}

2017年6月26日月曜日

Java Timer

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
public static int x;
public static void main(String[] args) throws Exception {
x = 30 * 60 + 9;
System.out.println(x);
while(x != 0){
x = x -1;
show();
}
}

public static void show(){
int hh = x /60;
int ss = x - hh * 60;
int hht1 = hh % 100 /10;
int hht2 = hh % 10;
int sst1 = ss % 100 /10;
int sst2 = ss % 10;
System.out.println("--------------");
System.out.print(hht1);
System.out.print(hht2);
System.out.print(sst1);
System.out.println(sst2);
System.out.println("--------------");
}
}

https://paiza.io/projects/FJ_pxjUT07pv51Ab7TWA4w

2017年6月4日日曜日

android 屏幕旋转

纵向方向（显示的高度大于宽度）。

https://developer.android.com/guide/topics/manifest/activity-element.html

2017年6月2日金曜日

android Bitmap to File

android Bitmap to File

case REQUEST_IMAGE_CAPTURE:
File f = getFilesDir();
Bitmap bit = data.getExtras().getParcelable("data");
ImageView imageView = (ImageView) findViewById(R.id.bit);
imageView.setImageBitmap(bit);

try {
FileOutputStream fileOutputStream = new FileOutputStream(f.getPath() + "/xxx.jpg");
bit.compress(Bitmap.CompressFormat.JPEG, 100, fileOutputStream);
fileOutputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
break;

2017年5月31日水曜日

android 裁剪图片库图片

package com.kankanla.m0531a;

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.provider.MediaStore;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {

private static final int REQUEST_IMAGE_SELECT = 1;
private static final int REQUEST_IMAGE_CAPTURE = 2;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setCutimg();
}

protected void setCutimg() {
Intent intent = new Intent();
intent.setAction(intent.ACTION_OPEN_DOCUMENT);
intent.setType("image/*");
startActivityForResult(intent, REQUEST_IMAGE_SELECT);
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
switch (requestCode) {
case REQUEST_IMAGE_SELECT:
Intent intent = new Intent("com.android.camera.action.CROP");
Uri uri = data.getData();
intent.setData(uri);
intent.putExtra("outputX", 200);
intent.putExtra("outputY", 200);
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("scale", true);
intent.putExtra("return-data", true);
startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);
break;
case REQUEST_IMAGE_CAPTURE:
Bitmap bit = data.getExtras().getParcelable("data");
ImageView imageView = (ImageView) findViewById(R.id.bit);
imageView.setImageBitmap(bit);
break;
}
}
}
}

2017年5月9日火曜日

Android 片段的生命周期（其 Activity 运行时）

片段的生命周期（其 Activity 运行时）

https://developer.android.com/guide/components/fragments.html

第一次启动
....m.out: Item_list--------------onAttach----------------
....m.out: Item_list--------------onCreate----------------
....m.out: Item_list--------------onCreateView----------------
....m.out: Item_list--------------onActivityCreated----------------
....m.out: Item_list--------------onStart----------------
....m.out: Item_list--------------onResume----------------

关闭屏幕
....nla.m0417b I/System.out: Item_list--------------onPause----------------
....nla.m0417b I/System.out: Item_list--------------onStop----------------

从新开屏幕
....nla.m0417b I/System.out: Item_list--------------onStart----------------
....nla.m0417b I/System.out: Item_list--------------onResume----------------

反转屏幕
....nla.m0417b I/System.out: Item_list--------------onPause----------------
....nla.m0417b I/System.out: Item_list--------------onStop----------------
....nla.m0417b I/System.out: Item_list--------------onDestroyView----------------
....nla.m0417b I/System.out: Item_list--------------onDetach----------------
....nla.m0417b I/System.out: Item_list--------------onAttach----------------
....nla.m0417b I/System.out: Item_list--------------onCreateView----------------
....nla.m0417b I/System.out: Item_list--------------onActivityCreated----------------
....nla.m0417b I/System.out: Item_list--------------onStart----------------
....nla.m0417b I/System.out: Item_list--------------onResume----------------

退回到上一Activety
....nla.m0417b I/System.out: Item_list--------------onPause----------------
....nla.m0417b I/System.out: Item_list--------------onStop----------------
....nla.m0417b I/System.out: Item_list--------------onDestroyView----------------
....nla.m0417b I/System.out: Item_list--------------onDestroy----------------
....nla.m0417b I/System.out: Item_list--------------onDetach----------------

从概览屏幕中返回
....nla.m0417b I/System.out: Item_list--------------onAttach----------------
....nla.m0417b I/System.out: Item_list--------------onCreate----------------
....nla.m0417b I/System.out: Item_list--------------onCreateView----------------
....nla.m0417b I/System.out: Item_list--------------onActivityCreated----------------
....nla.m0417b I/System.out: Item_list--------------onStart----------------
....nla.m0417b I/System.out: Item_list--------------onResume----------------

打开概览屏幕
....nla.m0417b I/System.out: Item_list--------------onPause----------------
....nla.m0417b I/System.out: Item_list--------------onStop----------------

打开其他Activety

在概览屏幕中删除
....m.out: Item_list--------------onDestroyView----------------
....m.out: Item_list--------------onDestroy----------------
....m.out: Item_list--------------onDetach----------------

按图标重新启动
....nla.m0417b I/System.out: Item_list--------------onAttach----------------
....nla.m0417b I/System.out: Item_list--------------onCreate----------------
....nla.m0417b I/System.out: Item_list--------------onCreateView----------------
....nla.m0417b I/System.out: Item_list--------------onActivityCreated----------------
....nla.m0417b I/System.out: Item_list--------------onStart----------------
....nla.m0417b I/System.out: Item_list--------------onResume----------------